What does "keep your oath" teach?
What does "do not break your oath" teach about integrity in speech?

Setting the Scene

Matthew 5:33–37 sets Jesus’ words inside the Sermon on the Mount.

• He cites the well-known command: “Do not break your oath,” then sharpens it by telling His followers to speak so truthfully that oaths become unnecessary.

• Because Scripture is accurate and literal, we take this charge at face value: God expects unflinching honesty.


What “Do Not Break Your Oath” Meant in Moses’ Law

Numbers 30:2: “If a man makes a vow to the LORD or swears an oath to obligate himself, he must not break his word...”

Deuteronomy 23:21-23 warns that God personally holds the vow-maker accountable.

• The law assumed occasional oath-taking but demanded 100 percent follow-through.


How Jesus Deepens the Command

Matthew 5:34-37:

“...But I tell you not to swear at all… Simply let your ‘Yes’ be ‘Yes,’ and your ‘No,’ ‘No.’ Anything more comes from the evil one.”

• Jesus relocates integrity from courtroom oaths to ordinary conversation.

• Truthfulness must be so constant that swearing becomes pointless.

• Swearing by “heaven,” “earth,” or “Jerusalem” tried to dodge direct mention of God; Jesus exposes that dodge—every word is already spoken in God’s presence.


Integrity in Speech: Key Traits

• Consistency – say the same thing in private and in public.

• Completeness – no half-truths, misleading silences, or selective facts.

• Courage – speak truth even when it costs comfort, profit, or reputation (Psalm 15:4).

• Humility – acknowledge limits; avoid promises that depend on factors you cannot control (James 4:13-16).


Practical Ways to Walk This Out

1. Pause before promising. Ask, “Can I truly deliver?”

2. Replace inflated guarantees with clear, honest statements.

3. Keep records if the commitment is complex, ensuring you fulfill every detail.

4. If you discover you cannot keep a promise, confess early, seek forgiveness, and make restitution where possible.

5. Teach children and younger believers by modeling careful, reliable speech.


Reinforcing Scriptures

Psalm 34:13: “Keep your tongue from evil and your lips from deceitful speech.”

Ecclesiastes 5:4-5 warns against careless vows.

Proverbs 12:22: “Lying lips are an abomination to the LORD.”

James 5:12 echoes Jesus almost word for word, showing the command’s ongoing authority.


Why Integrity Matters

• Upholds God’s character: “It is impossible for God to lie” (Hebrews 6:18).

• Builds trust within families, churches, workplaces.

• Serves as salt and light in a culture dulled by spin and exaggeration.

• Prepares us for eternal fellowship, where “nothing unclean” can dwell (Revelation 21:27).


Living Summary

“Do not break your oath” calls believers to such transparent, reliable speech that elaborate vows become obsolete. A plain “Yes” or “No,” consistently honored, turns everyday words into steady testimony that the God of truth rules our hearts and tongues.

How does Matthew 5:33 guide us in making and keeping promises today?
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