Sh'mu'el Alef (1 Sa) 29:3

The chiefs of the P’lishtim asked, “What are these Hebrews doing here?” Akhish answered the chiefs of the P’lishtim, “This is David, who was a servant of Sha’ul, king of Isra’el. He’s been with me now for well over a year, and I haven’t found anything wrong with him between the time he deserted to me and now.”