How do we know that humility in speech is important for Christians?

The importance of humility in our speech is heavily emphasized throughout Scripture. Proverbs and Ecclesiastes warn us that many words can lead to folly. The point made in Ecclesiastes 5 reflects the idea that being quick to speak may often result in sinning against God, whereas a humble heart contributes to a posture of readiness to hear from Him. In Matthew 12:34, Jesus instructs that our words reveal what is in our hearts, underscoring that a humble heart yields wise and truthful speech. Thus, humility protects us from prideful self-reliance, encouraging us to speak words that reflect God’s wisdom and love.