Bible's authority: "Your word is truth"?
What does "Your word is truth" imply about the Bible's authority?

Setting the Verse in Context

John 17 records Jesus’ High Priestly Prayer.

• He prays for His disciples’ protection, unity, and sanctification.

• In verse 17 He asks, “Sanctify them by the truth; Your word is truth” (John 17:17).

• Jesus stakes His followers’ holiness on the reliability of God’s spoken and written word.


Unpacking the Phrase “Your word is truth”

• “Your word” includes every utterance of God—spoken through prophets, recorded in Scripture, embodied in Christ (John 1:1).

• “Is” indicates present, enduring reality; God’s word does not become truth, it already is truth (Psalm 119:160).

• “Truth” (alētheia) means absolute, unchanging reality, not opinion or cultural trend.


Implications for the Bible’s Authority

• Divine Origin:

– All Scripture is “God-breathed” (2 Timothy 3:16).

– Because it comes from God, it carries His complete authority.

• Inerrancy:

– “Every word of God is flawless” (Proverbs 30:5).

– If God cannot lie (Titus 1:2), His written word cannot contain error.

• Supremacy:

– Jesus places Scripture above human tradition (Matthew 15:3).

– Not even “a jot or stroke” will fail (Matthew 5:18).

• Efficacy:

– God’s word accomplishes what He sends it to do (Isaiah 55:11).

– It sanctifies, convicts, and transforms (John 17:17; Hebrews 4:12).

• Permanence:

– “The word of our God stands forever” (Isaiah 40:8).

– Cultural shifts do not diminish its authority.


How This Shapes Our Relationship to Scripture

• Confidence: We approach the Bible expecting truth, not mere inspiration or advice.

• Submission: Because it is God’s authoritative voice, we yield our beliefs and behaviors to its teaching.

• Discernment: Scripture becomes the measuring stick for doctrine, experience, and moral choices (Acts 17:11).

• Obedience: Hearing without doing is self-deception (James 1:22); the Bible’s authority calls for action.

• Hope: A trustworthy word anchors faith amid doubt, suffering, and cultural confusion (Romans 15:4).


Living Under the Authority of the Word

• Read it daily with the expectation of hearing God’s unerring truth.

• Study it carefully, letting clearer passages interpret the harder ones.

• Memorize and meditate on it so the truth shapes inner desires (Psalm 119:11).

• Apply it immediately; delayed obedience undercuts its authority in our lives.

• Share it confidently, knowing God’s word carries its own power to save and sanctify (1 Peter 1:23).

How does John 17:17 define the role of truth in sanctification?
Top of Page
Top of Page