The Lord says to my Lord: “Sit at my right hand, until I make your enemies your footstool.” (Psalm 110:1)
You may recall Jesus referencing this psalm when speaking to the religious leader who wanted to eliminate Him. Psalm 110 is the most quoted psalm in the New Testament. In it, the Son of God is clearly described and referenced to. The Son is declared to possess power and authority, as the one who sits at the right hand of the Father. He is a king judging all wickedness.
But the Son is also a priest (v4). Kings in the Old Testament of Israel could not be priests because they originated from a different tribe. King Uzziah was judged by God when he tried to perform the duties of the priests, who were the descendants of Aaron (2 Chronicles 26:19).
But the Son of God is uniquely qualified as the priestly king, who not only rules in power and might but as a priest offered Himself as a substitute in our place. He gave His life on the cross in order bring many to the family of God. Like the New Testament authors, treasure deeply the references of Christ in the Old Testament. Let it lead us to a greater worship of Him!