Psalm 89:27 Meaning

25I will set his hand also in the sea, and his right hand in the rivers.

26He shall cry unto me, Thou art my father, my God, and the rock of my salvation.

27Also I will make him my firstborn, higher than the kings of the earth.

28My mercy will I keep for him for evermore, and my covenant shall stand fast with him.

29His seed also will I make to endure for ever, and his throne as the days of heaven.