Yes — clearly addressed in Scripture. Proverbs 12:22, Colossians 3:9, Revelation 21:8. God is truth (John 14:6) and lying contradicts his character. 20/100 Avoid — sincere deception is clearly sinful.
The Bible addresses lying clearly. The ninth commandment (Exodus 20:16) prohibits bearing false witness. Proverbs 12:22: "The Lord detests lying lips, but he delights in people who are trustworthy." Colossians 3:9: "Do not lie to each other." Revelation 21:8 lists "all liars" among those whose "place will be in the fiery lake." God's character is truth — Jesus declared "I am the way and the truth and the life" (John 14:6). Satan is described as "the father of lies" (John 8:44). Lying therefore contradicts the character of God himself.
Several biblical narratives involve deception in morally complex situations: the Hebrew midwives lying to Pharaoh to save babies (Exodus 1:15-21), Rahab lying to protect the spies (Joshua 2), Corrie ten Boom's family lying to Nazis about hiding Jewish people. These cases have generated significant theological debate about whether lying is always sinful or whether some situations create genuine moral conflict. Most Christians who grapple honestly with these texts conclude that in genuinely life-or-death conflict situations, protecting innocent life takes precedence — but these are extreme exceptions that don't justify everyday deception.
Not everything that sounds like a false statement is a lie. Acting in a play, writing fiction, bluffing in poker, and playing the Impostor in Among Us are performative assertions — both parties understand these are not sincere truth claims. For game deception specifically, see our Among Us guide.
For a thorough biblical treatment: GotQuestions on lying.
Questions about sin fall into two categories: things explicitly called sin in Scripture, and disputable matters (Romans 14-15) where Christians with different convictions should respect each other's consciences. Even when something isn't explicitly sinful: Does this practice reflect Christ's lordship over all of life (Colossians 3:17)? Is it beneficial — not just permissible? (1 Corinthians 10:23). Score: 20/100 Avoid.
See our Is It a Sin? hub. GotQuestions and the Gospel Coalition provide thorough evangelical analysis.