'Knelt' in the Bible

Then David got up afterward and went out of the cave and called after Saul, "My lord the king!" When Saul looked after him, David knelt down [with his] face to the ground and bowed down.

Then he said to her, "What [is] his appearance?" She said, "An old man [is] coming up, and {he is wrapped in a robe}." Then Saul realized that it was Samuel, and he knelt [with] his face to the ground and bowed down.