1 Samuel 25:14-17

14And one of [Nabal's] young men told Abigail, Nabal's wife, saying, Behold, David sent messengers out of the wilderness to bless our master; and he has insulted them.

15And the men were very good to us, and we were not hurt, neither missed we anything, as long as we companied with them, when we were in the fields.

16They were a wall to us both by night and day, all the while we were with them feeding the sheep.

17And now know and consider what thou wilt do, for evil is determined against our master, and against all his household; and he is such a son of Belial, that one cannot speak to him.