will make him my firstborn
Throne of His Father David
Psalm 89:27 Also I will make him my firstborn, higher than the kings of the earth.
Luke 1:32 He shall be great, and shall be called the Son of the Highest: and the Lord God shall give unto him the throne of his father David:
33 And he shall reign over the house of Jacob for ever; and of his kingdom there shall be no end.