So Jonathan told David, saying, "My father Saul seeks to kill you. Therefore please be on your guard until morning, and stay in a secret place and hide.
1 Samuel 19:2
Surrounding context
19:1 Now Saul spoke to Jonathan his son and to all his servants, that they should kill David; but Jonathan, Saul's son, delighted greatly in David.
19:2 So Jonathan told David, saying, "My father Saul seeks to kill you. Therefore please be on your guard until morning, and stay in a secret place and hide.
19:3 And I will go out and stand beside my father in the field where you are, and I will speak with my father about you. Then what I observe, I will tell you."