How Do We Know What We Know?

Testing Every Claim to Knowledge by the Word of God

Not every claim to knowledge is knowledge.

Confidence is not the same as truth. Familiarity is not the same as understanding. A repeated explanation is not the same as exegesis. A system that feels coherent is not necessarily faithful. A tradition that feels obvious may still be a tradition. A teacher may be gifted and still wrong. An experience may be powerful and still misleading.

Christian discernment requires more than confidence. It requires testing.

John commands:

“Beloved, do not believe every spirit, but test the spirits, whether they are of God.” — 1 John 4:1, NKJV

Paul commands:

“Test all things; hold fast what is good.” — 1 Thessalonians 5:21, NKJV

Testing is not unbelief. Testing is obedience. The church is not commanded to be suspicious of everything in a cynical way, but neither is it permitted to receive every claim unexamined. Spiritual claims must be tested. Doctrinal claims must be tested. Interpretations must be tested. Traditions must be tested. Systems must be tested. Teachers must be tested. Even our own confidence must be tested.

The question is not merely, “Do I believe this?” The deeper question is: “Why do I believe this, and has it been tested by the word of God?”

Knowledge Begins With God

Christian knowledge begins with God because all truth belongs to God. Man does not stand over reality as its maker. He does not create truth by preference, tribe, system, tradition, or experience. He receives truth because God has made Himself known.

Proverbs says:

“The fear of the LORD is the beginning of knowledge, but fools despise wisdom and instruction.” — Proverbs 1:7, NKJV

Knowledge begins with reverence. It begins with the recognition that God is God and man is not. This means Christian knowing is not autonomous. It is not the self deciding what reality must be. It is the creature receiving truth from the Creator. We do not need exhaustive knowledge in order to possess true knowledge; we need revealed knowledge from the God who speaks truthfully.

Paul warns that fallen man can suppress truth:

“Who suppress the truth in unrighteousness.” — Romans 1:18, NKJV

The problem is not merely lack of information. The problem is moral and spiritual. Sin affects what man loves, fears, defends, avoids, and notices. Sin affects reasoning. It affects interpretation. It affects memory. It affects loyalty. It affects what conclusions feel threatening and what explanations feel safe.

This is why knowledge requires humility.

• If God has spoken, we must listen.
• If Scripture is truth, we must submit.
• If Christ is Lord, we must obey.
• If the apostles delivered the faith, we must guard it.
• If our hearts can deceive us, we must be tested by the word.

Christian knowing is not confidence in our own neutrality. It is submission to the God who speaks truthfully.

Information Is Not the Same as Understanding

Information is access to data. Understanding is rightly grasping meaning.

A person can possess facts without wisdom. He can quote verses without understanding the argument. He can know Greek words without submitting to the text. He can memorize doctrinal categories without seeing whether those categories truly arise from Scripture. He can read many books and still miss the point.

The scribes and Pharisees had information. They searched the Scriptures. Yet Jesus told them:

“You search the Scriptures, for in them you think you have eternal life; and these are they which testify of Me.” — John 5:39, NKJV

They had biblical exposure, but they missed the Christ to whom Scripture bore witness. After His resurrection, Jesus corrected His disciples by opening the Scriptures:

“And beginning at Moses and all the Prophets, He expounded to them in all the Scriptures the things concerning Himself.” — Luke 24:27, NKJV

Then Luke says:

“And He opened their understanding, that they might comprehend the Scriptures.” — Luke 24:45, NKJV

They needed more than information. They needed understanding. Understanding asks how the parts fit together. It traces the argument. It attends to grammar, context, covenant location, authorial intent, canonical fulfillment, and apostolic usage. It does not collect verses as isolated fragments. It listens to the text as a word from God.

Information can answer the question, “What words appear on the page?” Understanding asks:

• What is being said?
• Why is it being said?
• How does the argument work?
• What problem is being addressed?
• What words carry the burden?
• What does the context require?
• How does this fit with Christ and the whole counsel of God?
• What must be believed, corrected, obeyed, or rejected?

Information can make a person feel equipped. Understanding makes a person accountable.

Can I Trust My Experiences?

Experience matters, but experience is not the final authority. Human beings truly experience conviction, joy, grief, answered prayer, suffering, temptation, worship, fear, peace, love, guilt, and spiritual struggle. The Christian faith is not merely abstract doctrine. Believers live before God in real bodies, real relationships, real churches, and real histories.

But experience must be interpreted. A person may feel peace and be deceived. A person may feel conviction and misunderstand its cause. A person may feel spiritually led and contradict Scripture. A person may feel certainty because an explanation is familiar. A person may feel threatened when Scripture challenges a system. A person may feel a sense of unity even when the truth is being avoided. A person may feel courage where pride is actually speaking. A person may feel humility where fear is actually silencing obedience.

Experience is real, but it is not self-interpreting. Jeremiah warns:

“The heart is deceitful above all things, and desperately wicked; who can know it?” — Jeremiah 17:9, NKJV

This does not mean every feeling is false. It means feelings cannot be treated as the final judges of truth. The Spirit of God does lead, convict, comfort, and sanctify His people. But the Spirit does not lead believers away from the word He inspired. He is the Spirit of truth, not the spirit of private contradiction.

Jesus said:

“Sanctify them by Your truth. Your word is truth.” — John 17:17, NKJV

Therefore, experience must be tested by Scripture.

• It must not be dismissed automatically.
• It must not be enthroned as authority.
• It must be tested.

The question is not, “Did I experience something?” The question is, “What does Scripture say about how this experience should be understood?”

Can I Trust My Teachers?

Teachers are gifts, but they are not final authorities. Christ gives teachers to His church for the equipping of the saints. Paul writes that the risen Christ gave:

“Some to be apostles, some prophets, some evangelists, and some pastors and teachers.” — Ephesians 4:11, NKJV

The church needs teachers. No believer should despise instruction, accountability, correction, or the wisdom of those who labor in the word. A person who refuses all teachers in the name of independence is not spiritually mature. He is vulnerable.

But teachers must be tested. The Bereans received Paul’s preaching with readiness, but they still examined the Scriptures:

“These were more fair-minded than those in Thessalonica, in that they received the word with all readiness, and searched the Scriptures daily to find out whether these things were so.” — Acts 17:11, NKJV

That is the model. They were not cynical; they received the word with readiness. But they were not gullible; they searched the Scriptures daily. If even apostolic preaching was examined by Scripture, no later teacher, pastor, scholar, seminary, confession, elder, or tradition is exempt from testing.

A teacher may be gifted and wrong, sincere and wrong, learned and wrong, persuasive and wrong, historically informed and wrong, beloved and wrong — right in many things and wrong in one serious thing.

Paul warned the Ephesian elders:

“Also from among yourselves men will rise up, speaking perverse things, to draw away the disciples after themselves.” — Acts 20:30, NKJV

False teaching can arise from within. That does not mean every teacher should be distrusted. It means every teacher should be tested by the word of God. Trust faithful teachers. But never give them the authority that belongs to Scripture.

Can I Trust My Tradition?

Tradition can be useful, but tradition is not lord. No one reads Scripture from nowhere. Every believer receives language, assumptions, habits, emphases, categories, and questions from a community. Tradition can preserve wisdom. It can remind us that we are not the first generation to read the Bible. It can connect us to faithful witnesses who suffered, studied, taught, and guarded doctrine before us.

But tradition can also distort. Jesus rebuked religious leaders who allowed tradition to nullify God’s command:

“Why do you also transgress the commandment of God because of your tradition?” — Matthew 15:3, NKJV

And again:

“Thus you have made the commandment of God of no effect by your tradition.” — Matthew 15:6, NKJV

Tradition becomes dangerous when it becomes invisible. A visible tradition can be examined. An invisible tradition feels like “just reading the Bible.” It becomes the lens through which Scripture is read while the reader no longer notices the lens. Certain verses become central. Others become problem texts. Certain explanations become familiar. Alternative readings feel dangerous before they have been tested.

The danger is not simply having tradition. Everyone has tradition. The danger is being unable to see it.

Tradition should serve as witness, not master. It may help us ask better questions, remember earlier debates, and avoid novelty. But it must remain testable by Scripture. When tradition corrects Scripture, tradition has become rebellion. When tradition prevents the text from speaking, tradition has become a veil. The question is not, “Did my tradition teach this?” The question is, “Did God speak this?”

Can I Trust My Theological System?

A theological system can help organize truth, but it can also control the text. Every reader has some framework. We all connect doctrines together. We all use categories. We all summarize. We all infer. A system is not wrong simply because it is systematic.

The danger begins when the system stops being corrected by Scripture and begins correcting Scripture. This happens when the system decides beforehand what a text is allowed to mean. It happens when certain passages are given controlling status while other passages are treated as problems to be solved. It happens when biblical words are redefined by theological categories rather than by their context. It happens when exceptions are made central and plain apostolic commands are pushed to the margins.

A system is serving Scripture when it helps us see connections the text itself establishes. A system is ruling Scripture when it prevents us from receiving what the text actually says.

Paul warned:

“Beware lest anyone cheat you through philosophy and empty deceit, according to the tradition of men… and not according to Christ.” — Colossians 2:8, NKJV

The key phrase is “not according to Christ.” A system may be coherent, elegant, ancient, scholarly, confessional, emotionally reassuring, and widely defended. But if it is not in accordance with Christ and the apostolic witness, it must be corrected.

A trustworthy system remains correctable. It can be tested. It can be revised. It can be challenged by Scripture. It does not need to neutralize inconvenient texts. It does not moralize disagreement before exegesis is heard. It does not accuse the questioner merely for asking whether the text actually supports the system.

The question is not, “Can my system explain this passage?” Many systems can explain away almost anything. The better question is, “Does this passage, rightly handled, actually teach what my system says?”

How Do I Test Competing Interpretations?

Competing interpretations must be tested by disciplined exegesis. Not by which one feels familiar, protects my theological identity, is defended by my favorite teacher, creates the least disruption, sounds most spiritual, or has the most cross-references. The right interpretation is the one that best accounts for the words, grammar, context, argument, and wider biblical witness without doing violence to any of them.

To test an interpretation, ask:

• What does the passage actually say?
• What do the key words mean in context?
• How does the grammar function?
• What is the author’s argument?
• What comes immediately before and after?
• What problem, question, or occasion is being addressed?
• What covenant context governs the passage?
• How does this passage relate to Christ?
• How do the apostles use this doctrine or theme?
• Does this interpretation require redefining words away from their normal contextual meaning?
• Does it depend on an exception becoming the rule?
• Does it flatten narrative, ignore command, or turn promise into a mere symbol?
• Does it harmonize Scripture by listening to all texts, or by silencing some texts?
• Does it preserve the apostolic pattern, or rearrange it?
• Does it produce obedience to Christ, or protect disobedience with theological language?

The goal is not to find the interpretation that best protects a prior conclusion. The goal is to receive what God has spoken.

Some interpretations fail because they cannot account for the immediate context. Others fail because they contradict the author’s argument. Others fail because they rely on imported definitions. Others fail because they isolate a verse from canonical fulfillment. Others fail because they explain one passage by canceling another.

A faithful interpretation should have explanatory power. It should make sense of the words, context, argument, and wider biblical witness without violence to the text.

A possible interpretation is not necessarily a faithful interpretation. Many readings are possible in abstraction; the question is which reading is most responsible to the words, grammar, context, argument, and apostolic witness.

Scripture Interprets Scripture, But Not as a Slogan

Christians often say, “Scripture interprets Scripture.” That is true, but it can be misused.

Properly used, it means Scripture is coherent because the God who speaks through it does not contradict Himself. Clearer passages help illuminate harder passages. Earlier revelation prepares for later fulfillment. Later revelation reveals the fulfillment of earlier shadows and promises. The whole counsel of God must be heard together.

Improperly used, “Scripture interprets Scripture” becomes a way of avoiding a text. A passage that challenges the system is not allowed to speak on its own terms because another passage is introduced to control it before it is interpreted. This is not interpretation. It is override.

Scripture interprets Scripture rightly when each passage is first allowed to say what it says in its own context. Only then should it be related to other passages in the canon. Harmony must not be achieved by muting the text.

For example, a passage about faith should not be used to erase a passage about baptism. A passage about grace should not be used to erase a passage about repentance. A passage about God’s initiative should not be used to erase human response. A passage about liberty should not be used to erase holiness. A passage about love should not be used to erase truth.

Scripture does not contradict itself. But our systems may force contradictions by refusing to let all texts speak. True harmony listens. False harmony silences.

How Do I Know Whether I Am Reading Scripture or Defending a System?

This is one of the most important questions in Christian discernment.

System-defense often feels like faithfulness because it uses biblical language, cites respected teachers, appeals to theological coherence, and warns against dangerous consequences. But it can still prevent Scripture from correcting us.

You may be defending a system rather than reading Scripture when:

• You already know what the text cannot mean before studying it.
• Your first instinct is to protect a doctrine rather than understand the passage.
• You treat some texts as “problem passages” because they do not fit your framework.
• You explain away the direct wording of a passage by appealing to distant texts.
• You rely on technical distinctions that the passage itself does not make.
• You become more concerned about theological consequences than textual meaning.
• You feel threatened by questions before the exegesis is complete.
• You assume your tradition’s categories are neutral.
• You judge an interpretation by whether it sounds like your group.
• You accuse dissenting readings before you have traced the argument.
• You use “clear passages” to silence passages that are clear in a different direction.
• You cannot state the opposing interpretation fairly.
• You would accept the argument if it supported your system, but reject it when it challenges it.

These signs do not prove the system is false. But they do indicate that the system may be functioning as a shield against correction.

Reading Scripture faithfully requires a different posture:

• Let the passage speak first.
• Trace the author’s argument.
• Define words by context before the system.
• Distinguish inference from statement.
• Distinguish possible from probable.
• Distinguish explanation from evasion.
• Allow apostolic examples and commands to carry weight.
• Let uncomfortable texts remain uncomfortable until they are understood.
• Be willing to revise inherited conclusions.
• Ask what obedience the text requires.

The decisive test is this: when the text presses against the system, which one is allowed to win?

The Role of Humility

Knowledge without humility becomes dangerous. Paul writes:

“Knowledge puffs up, but love edifies.” — 1 Corinthians 8:1, NKJV

Paul is not condemning true knowledge. He is warning against knowledge used without love. A person may know true things and still be proud, harsh, divisive, or careless with weaker brethren.

James warns that teachers will receive stricter judgment:

“My brethren, let not many of you become teachers, knowing that we shall receive a stricter judgment.” — James 3:1, NKJV

That warning should sober anyone who handles Scripture publicly. Humility does not mean pretending truth cannot be known. It does not mean refusing to confront error. It does not mean treating all interpretations as equally valid. Biblical humility means standing under God’s word, remembering our dependence, receiving correction, and speaking truth as those who live by mercy.

Humility says:

• I may be wrong.
• My tradition may be wrong.
• My system may need correction.
• My favorite teacher may have missed something.
• My experience may need interpretation.
• My confidence may exceed my understanding.
• My zeal may need love.
• My love may need truth.
• My doctrine must become obedience.

Humility does not weaken conviction. It purifies it. The most faithful reader is not the one who refuses certainty, but the one whose certainty is governed by Scripture rather than ego, tribe, or system.

The Apostolic Pattern of Testing

The New Testament repeatedly calls believers to test, examine, guard, and hold fast.

Paul says:

“Examine yourselves as to whether you are in the faith. Test yourselves.” — 2 Corinthians 13:5, NKJV

He says again:

“Test all things; hold fast what is good.” — 1 Thessalonians 5:21, NKJV

John says:

“Do not believe every spirit, but test the spirits.” — 1 John 4:1, NKJV

Jude says:

“Contend earnestly for the faith which was once for all delivered to the saints.” — Jude 3, NKJV

Paul tells Timothy:

“Hold fast the pattern of sound words which you have heard from me.” — 2 Timothy 1:13, NKJV

Then:

“That good thing which was committed to you, guard by the Holy Spirit who dwells in us.” — 2 Timothy 1:14, NKJV

The apostolic pattern is not naive. It does not say, “Trust every teacher.” It does not say, “Follow every impression.” It does not say, “Assume every tradition is faithful.” It does not say, “Protect every system.” It says test, hold fast, guard, contend, and continue.

But testing must be done in the right spirit. Testing is not cynicism, suspicion as identity, pride, quarrelsomeness, novelty-seeking, contempt for teachers, or rebellion against correction. Testing is faithful when it is done under Scripture, in humility, for the sake of truth, love, holiness, and obedience to Christ.

From Knowing to Faithfulness

The goal of Christian knowledge is not mere certainty. It is faithfulness.

Jesus said:

“If you know these things, blessed are you if you do them.” — John 13:17, NKJV

Knowing must become doing. Theological knowledge that does not become obedience has failed its purpose. Exegesis that does not lead to submission remains incomplete. Discernment that does not lead to holiness becomes criticism. Confidence that does not produce humility becomes pride.

There is also a danger in using study to delay obedience. Some questions require deeper examination. Others have already been answered by Scripture, and more research becomes a way of postponing faithfulness.

Paul prayed that believers would be filled with knowledge, but not as an end in itself:

“That you may be filled with the knowledge of His will in all wisdom and spiritual understanding.” — Colossians 1:9, NKJV

Why?

“That you may walk worthy of the Lord, fully pleasing Him, being fruitful in every good work.” — Colossians 1:10, NKJV

Knowledge should produce a worthy walk. Understanding should produce fruit. Doctrine should produce faithfulness. So the final test of knowledge is not merely whether I can explain it. The final test is whether I have received the truth in a way that leads to obedience before God.

Conclusion: Tested Knowledge Under the Word of God

How do we know what we know?

We know because God has spoken, acted, revealed Himself, sent His Son, inspired Scripture, commissioned His apostles, and given His Spirit. We know truly, though not exhaustively, because God has made truth known.

But not every claim to knowledge is knowledge. Information must become understanding. Experience must be interpreted. Teachers must be tested. Tradition must be examined. Systems must remain correctable. Interpretations must be weighed by the text. Confidence must be humbled before Scripture.

The church must therefore ask hard questions:

• Am I receiving Scripture or defending a system?
• Am I tracing the argument or protecting a conclusion?
• Am I testing my tradition or assuming it?
• Am I listening to the text or explaining it away?
• Am I pursuing truth or preserving identity?
• Am I obeying what I know or merely collecting information?

Truth does not fear testing. Only error needs protection from careful exegesis.

Christian knowledge is not autonomous certainty. It is tested confidence under the word of God. It is humble because God is the giver of truth. It is firm because God has spoken clearly. It is obedient because Christ is Lord. It is guarded because the apostles delivered the faith. It is fruitful because the Spirit forms truth in the people of God.

Not every claim to knowledge is knowledge. So test all things. Hold fast what is good. And let what is known become faithfulness before God.