'Altar to the Lord' in the Bible

Then he would return to Ramah, because his home was there; and there he judged Israel, and there he built an altar to the Lord. Cross references: 1 Samuel 7:2 : 2 Sam 6:3, 4; 1 Chr 13:5-7 end of crossrefs

And Saul built an altar to the Lord; it was the first altar that he built to the Lord.