Kings: should be Reverenced

After that, David got up, went out of the cave, and called out to Saul, “My lord the king!” When Saul looked behind him, David bowed facedown in reverence

Otherwise, when my lord the king rests with his fathers, I and my son Solomon will be counted as criminals.”

So the king was told, “Nathan the prophet is here.” And Nathan went in and bowed facedown before the king.