He said unto the king of Moab - David could not trust his parents within the reach of Saul, and he found it very inconvenient to them to be obliged to go through all the fatigues of a military life, and therefore begs the king of Moab to give them shelter. The king of Moab, being one of Saul’s enemies, would be the more ready to oblige a person from whom he might at least expect friendship, if not considerable services.