Of course not! God must be true, though every human being is a liar, as it is written: “That you may be justified in your words, and conquer when you are judged.”
David said to himself: “I shall perish some day at the hand of Saul. I have no choice but to escape to the land of the Philistines; then Saul will give up his continual search for me throughout the land of Israel, and I will be out of his reach.”