1 Samuel 21:13-15

Revised Standard Version

¹³ So he changed his behavior before them, and feigned himself mad in their hands, and made marks on the doors of the gate, and let his spittle run down his beard. ¹⁴ Then said A′chish to his servants, “Lo, you see the man is mad; why then have you brought him to me? ¹⁵ Do I lack madmen, that you have brought this fellow to play the madman in my presence? Shall this fellow come into my house?”