David, named in the last verse concludes his doxology by summing up what he has been proclaiming. David is God’s king. David is God’s anointed. David knows he is the Lord’s chosen and anointed king. David recalls God’s promise while a lad. (1 Samuel 16:13) He experienced God’s grace in making it happen.
The whole song is to be understood in the context of David’s official capacity and the Lord’s covenant with him fulfilled. What David claims in this grand conclusion and in the whole psalm has been and is being fulfilled in Jesus Christ, David’s great descendant.
Jesus’ resurrected avenges the wrongful torture, crucifixion, and death. Jesus ascended to heaven and was crowned with glory. Jesus sits at the right hand of the Most High God. Jesus rules all creation. Jesus will come again in glory to claim what is his. He will drive out and punish his enemies. He will give rewards to his faithful and loving subjects.
While on trial “…the high priest asked him, ‘Are you the Christ, the Son of the Blessed One?'” (Mark 14:61) “‘I charge you under oath by the living God: Tell us if you are the Christ, the Son of God.’ ‘Yes, it is as you say,’ Jesus replied. ‘But I say to all of you: In the future you will see the Son of Man sitting at the right hand of the Mighty One and coming on the clouds of heaven.’ Then the high priest tore his clothes and said, ‘He has spoken blasphemy! Why do we need any more witnesses? Look, now you have heard the blasphemy. What do you think?’ ‘He is worthy of death,’ they answered. Then they spit in his face and struck him with their fists. Others slapped him and said, ‘Prophesy to us, Christ. Who hit you?'” (Matthew 26:63-68)
They killed Jesus and Jesus arose from the grave.
