19. 1 Corinthians 13:1: If I speak in human or angelic tongues, but do not have love, I am only a resounding gong or a clanging cymbal.
This is a good lesson for anyone in a relationship where tempers often flare. Saying words to someone out of anger, even if it is meant in good faith will always fail to get the message across. Pick your words carefully, and be even more cautious about your intent when talking to someone you care about.