1 Samuel 22:3-5

Young's Literal Translation

³ And David goeth thence to Mizpeh of Moab, and saith unto the king of Moab, `Let, I pray thee, my father and my mother go out with you, till that I know what God doth for me;'

⁴ and he leadeth them before the king of Moab, and they dwell with him all the days of David's being in the fortress.

⁵ And Gad the prophet saith unto David, `Thou dost not abide in a fortress, go, and thou hast entered for thee the land of Judah;' and David goeth and entereth the forest of Hareth.