Practical Application
What Does the Bible Say About Lying?
'Thou shalt not bear false witness.' But what about Rahab? And what about white lies?
The Bible is consistent and clear: lying is wrong. From the Ten Commandments to the book of Proverbs to the teachings of , honesty is treated not as a social nicety but as a reflection of God's own character. And yet the Bible also tells the story of , a woman who lied to protect Israelite spies — and is praised for her faith. So which is it? The answer is: both, and working through the tension is worth the effort.
The Baseline Rule
📖 Proverbs 12:17-22 Solomon's wisdom literature is unambiguous:
Truthful lips endure forever, but a lying tongue is but for a moment. ()
The LORD detests lying lips, but he delights in people who are trustworthy. ()
The ninth commandment — "You shall not bear false witness against your neighbor" — was originally about perjury in legal proceedings, but the prophets and wisdom writers extended it to cover deception broadly. Lying distorts reality, damages relationships, and undermines the fabric of trust a community depends on. At its root, sin is a departure from what is real and true — which is why dishonesty is treated so seriously throughout Scripture.
Paul reinforces this in the New Testament:
Therefore, having put away falsehood, let each one of you speak the truth with his neighbor, for we are members one of another. ()
The reason Paul gives is communal: lies tear apart the body. Truth-telling isn't just an individual virtue — it's what makes community possible.
What Jesus Said
📖 Matthew 5:37 Jesus takes it even further in the Sermon on the Mount:
Let what you say be simply "Yes" or "No"; anything more than this comes from evil. ()
He's pushing back against a culture of elaborate oath-making — people would swear by this or that to signal they were really telling the truth this time. Jesus says: just tell the truth. All the time. Your word should be so reliable that no oath is needed.
The Rahab Problem
📖 Joshua 2:1-7 Here's where it gets complicated. Rahab, a woman living in Jericho, hid two Israelite spies and then lied to the king's soldiers about their whereabouts. The soldiers left. The spies escaped. And Rahab is later cited in — the great "hall of faith" — and in , where her actions are described as righteousness.
This has generated genuine debate among theologians for centuries, and it's worth taking the main views seriously:
The "lesser evil" view holds that Rahab was caught in a tragic moral conflict where any choice involved some wrong. She chose the lesser harm — a lie — to prevent a greater one. God honored her faith and courage, but the lie itself wasn't ideal.
The "conflicting obligations" view argues that when two genuine moral duties collide — loyalty to innocent life versus truth-telling to a murderous regime — the higher obligation wins. On this view, telling the truth to the soldiers would have been a moral failure, not a virtue. Lying wasn't sinful in that context; it was the right thing to do.
The "moral exemption" view sees cases like Rahab and the Egyptian midwives (who also lied to protect Hebrew infants, ) as genuine exceptions carved out by the nature of the situation: you have no obligation to tell the truth to those who intend to use it to commit evil.
Evangelical scholars hold all three positions. What they agree on is this: Rahab's faith was real, her act was courageous, and God honored it.
What This Means in Practice
📖 Ephesians 4:15 None of this makes lying a gray area for ordinary life. "What about Rahab?" is not a useful response when someone asks if you finished the report or whether you actually like their haircut. The cases where genuine moral conflict arises — where protecting innocent life requires deception — are rare, weighty, and recognizable as such. They are not a license for the routine small dishonesties that erode trust in relationships and communities.
Paul's phrase in — "speaking the truth in love" — captures the posture well. Truth-telling isn't a blunt instrument wielded without care. It's something practiced with wisdom and love, consistently, as a way of honoring both God and the people we're in relationship with.
The goal Scripture points toward is a character so shaped by honesty that deception becomes genuinely foreign to you — not because you've memorized a rule, but because you've become the kind of person who loves truth.