1 Samuel 21:13

so he pretended to be insane in their presence. He acted like a madman around them, scribbling on the doors of the gate and letting saliva run down his beard.

Psalm 34:1-22

Concerning David, when he pretended to be insane in the presence of Abimelech, who drove him out, and he departed.I will praise the Lord at all times;
His praise will always be on my lips.

Proverbs 29:25

The fear of man is a snare,
but the one who trusts in the Lord is protected.

Ecclesiastes 7:7

Surely, the practice of extortion turns a wise person into a fool,
and a bribe destroys the mind.

Treasury of Scripture Knowledge

Summary

And he changed his behaviour before them, and feigned himself mad in their hands, and scrabbled on the doors of the gate, and let his spittle fall down upon his beard.

Bible References

Changed

Psalm 34:1
Concerning David, when he pretended to be insane in the presence of Abimelech, who drove him out, and he departed.I will praise the Lord at all times;
His praise will always be on my lips.
Ecclesiastes 7:7
Surely, the practice of extortion turns a wise person into a fool,
and a bribe destroys the mind.

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.