1 Chronicles 12:17

And David went out to meet them, and answered and said unto them, If ye be come peaceably unto me to help me, mine heart shall be knit unto you, their mutual friendship would be so firm as to make their hearts one; but if ye be come to betray me to mine enemies, seeing there is no wrong in mine hands, he being innocent of any deed of violence, the God of our fathers look thereon and rebuke it. Years of persecution had made David suspicious of all men, so that he feared treachery.