1 Samuel 21:13

Overview - 1 Samuel 21
David at Nob obtains of Ahimelech hallowed bread.
Doeg is present.
David takes Goliath's sword.
10 David at Gath feigns himself mad.
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1 Samuel 21:13  (King James Version)
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.

Psalms 34:1 ; *title
Proverbs 29:25 ; Ecclesiastes 7:7

or, made marks.