1 Samuel 27:1-7

And David said in his heart, I shall now perish one day by the hand of Saul: there is nothing better for me than that I should escape into the land of the Philistines; and Saul will despair of me, to seek me any more in all the borders of Israel: so shall I escape out of his hand. And David arose, and passed over, he and the six hundred men that were with him, unto Achish the son of Maoch, king of Gath. And David dwelt with Achish at Gath, he and his men, every man with his household, even David with his two wives, Ahinoam the Jezreelitess, and Abigail the Carmelitess, Nabal’s wife. And it was told Saul that David was fled to Gath: and he sought no more again for him. And David said unto Achish, If now I have found favor in thine eyes, let them give me a place in one of the cities in the country, that I may dwell there: for why should thy servant dwell in the royal city with thee? Then Achish gave him Ziklag that day: wherefore Ziklag pertaineth unto the kings of Judah unto this day. And the number of the days that David dwelt in the country of the Philistines was a full year and four months.