Parallel
1 Samuel 21:13
King James Version (1769 Blayney revision, with Apocrypha) · Berean Standard Bible
And he changed his behaviour before them, and feigned himself mad in their hands, and scrabbled (note: Or, made marks) on the doors of the gate, and let his spittle fall down upon his beard.
So he changed his behavior before them and feigned madness in their hands; he scratched on the doors of the gate and let his saliva run down his beard.