1 Samuel 27:5

And David said unto Achish, If I have now found grace in thine eyes, let them give me a place in some town in the country, one of the suburbs or country-cities, that I may dwell there; for why should thy servant dwell in the royal city with thee? David's plea and suggestion was that his men were overcrowding the city and that their expenses were very large, but his real motive undoubtedly was to get away from the idolatrous customs of the Philistines, which surely must have brought him, as the guest of the king, into unpleasant situations at times.