Proverbs 30:5-6, 8-9, 18, 32
Proverbs 30:5-6 ESV
Every word of God proves true; he is a shield to those who take refuge in him. Do not add to his words, lest he rebuke you and you be found a liar.
Proverbs 30:32 ESV
If you have been foolish, exalting yourself, or if you have been devising evil, put your hand on your mouth.