Proverbs 18:19-21

New Century Version

¹⁹ A brother who has been insulted is harder to win back than a walled city,
    and arguments separate people like the barred gates of a palace.

²⁰ People will be rewarded for what they say;
    they will be rewarded by how they speak.

²¹ What you say can mean life or death.
    Those who speak with care will be rewarded.