“My mercy will I keep for him for evermore, and my covenant shall stand fast with him.”
King James Version (KJV)
89:27 My first - born - As he calls me father, ver.#26|, so I will make him my son, yea my first - born; who had divers privileges above other sons. This and the following passage in some sort agree to David, but are properly accomplished in Christ. Higher - This also was in some sort accomplished in David, but more fully in the Messiah.
89:29 For ever - To sit upon the throne for ever, as the next words explain it. This was accomplished only in Christ.