Now, there is one more highly significant part of this psalm, which is verse 4:
At first glance, this reference to a Priest may seem out of place because everything else has been about kingship after Christ’s enthronement. But this psalm foretells that David’s Lord would also be a Priest—the ultimate Priest. This was not possible in Israel, where the kings descended from David, who was of the tribe of Judah, and the priestly line was of the tribe of Levi, and more specifically, of the house of Aaron. But the One sitting down would also be a Priest. The two roles would be combined in the Messiah.
