Matthew Poole and continuators on 1 Samuel 7:17

17 And his return was to Ramah: for there was his house, and there he judged Israel, and there he built an altar unto the LORD .

That by joyning Sacrifices with his Prayers, he might the better obtain direction and assistance from God upon all emergencies. Object. It was unlawful to build another Altar for Sacrifice besides that before the Tabernacle, Deut. 12. 5, 13. Answ. This was in part excused by the confusion of those times, wherein the Tabernacle and its Altar were Destroyed; as is most probable; but most fully, because this was done by Prophetical Inspiration, and Divine Dispensation, as appears by Gods approbation and acceptance of the Sacrifices offered upon it.