Jesus Is Jehovah, Part 6: Excursus—Descent into Hell

“The phrase is rare, but it does appear twice in the OT. In Isaiah 44.23 it appears in contrast with heaven: “Sing O ye heavens; … shout, ye lower parts of the earth.” Here it clearly means the earth as distinguished from heaven; grammarians would call this a ‘genitive of apposition’—’ye lower parts, that is to say, the earth.’” - Olinger