Proverbs 10:10, 14, 18

The troublemaker always has a clever plan and won’t look you in the eye, but the one who speaks correction honestly can be trusted to make peace.

Wise men don’t divulge all that they know, but chattering fools blurt out words that bring them to the brink of ruin.

The one who hides his hatred while pretending to be your friend is nothing but a liar. But the one who slanders you behind your back proves that he’s a fool, never to be trusted.