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.

Ecclesiastes 12:4

12:4 and the doors along the street are shut;

when the sound of the grinding mill grows low,

and one is awakened by the sound of a bird,

and all their songs grow faint,