David wrote Psalm 110 as an announcement of the Messiah’s coming reign. In Hebrew, this verse is: “Yahweh” said to my “Adonai.” The name that God revealed to Moses, “Yahweh” (or “Jehovah”) was the One talking to the Messiah, whom David referred to as “my Lord” (“Adonai”). The title “Adonai” was also used for God. David had already been told by God that the Messiah would be from his lineage (2 Sam. 7:16). Yet, here the Spirit revealed to David that the Messiah would be greater than him, so that he would call him “Adonai,” a title usually reserved for God.
The Spirit revealed to David a conversation between the Father and the Son from eternity past. Yet, it described the present time. For the Lord Jesus, having already accomplished our salvation as Suffering Servant, now sits at the right hand of the Father awaiting His appearance as Victorious King (Mark 14:62).
However, the most profound revelation may be that David called Him, “my Lord.” For that is the key. Not that He is “the” Lord, but that He is “my” Lord. Have you made Jesus your Lord today?