Ecclesiastes 10:12-13

Words and Works of Wise Men and Fools

10:12 The words of a wise person win him favor,

but the words of a fool are self-destructive.

10:13 At the beginning his words are foolish

and at the end his talk is wicked madness,

Ecclesiastes 10:20

10:20 Do not curse a king even in your thoughts,

and do not curse the rich while in your bedroom;

for a bird might report what you are thinking,

or some winged creature might repeat your words.