'Fall' in the Bible

Of Manasseh also there fell away some to David, when he came with the Philistines against Saul to battle; but they didn't help them; for the lords of the Philistines sent him away after consultation, saying, "He will fall away to his master Saul to the jeopardy of our heads."

David said to Gad, "I am in distress. Let me fall, I pray, into the hand of Yahweh; for his mercies are very great. Let me not fall into the hand of man."