1 Samuel 24:8

24:8 Afterward David got up and went out of the cave. He called out after Saul, “My lord, O king!” When Saul looked behind him, David kneeled down and bowed with his face to the ground.

1 Samuel 28:14

28:14 He said to her, “What about his appearance?” She said, “An old man is coming up! He is wrapped in a robe!”

Then Saul realized it was Samuel, and he bowed his face toward the ground and kneeled down.