2 Samuel 5:17

All the Philistines came up to seek David They raised all the forces they were able, to come up to David, and fight him before he was settled in his new kingdom. While the civil war subsisted between the partisans of David and Ish-bosheth, the Philistines contented themselves with being calm spectators of their mutual ravages and conflicts, which naturally tended to their mutual destruction; but when all these were ended in their unanimous election of David to the throne, and that election was succeeded by those beginnings and omens of a prosperous reign which have been mentioned, they began to be alarmed, and thought this the fit season to crush the growing power of this prince before it rose to a greater height. And David heard it, and went down to the hold To some fortified place, to which his people might conveniently resort from all parts, and where he might intrench his army.