Hebrews 13:20–21 (ESV) …. “Now may the God of peace who brought again from the dead our Lord Jesus, the great shepherd of the sheep, by the blood of the eternal covenant, equip you with everything good that you may do his will, working in us that which is pleasing in his sight, through Jesus Christ, to whom be glory forever and ever. Amen.”
Now the author uttered a theologically packed benediction for his readers with statements about both the Father and the Son. He identified God as the God of peace seeking to promote peace among the readers. God’s dynamic actions caused the resurrection of Jesus. (This is the only clear reference to the resurrection in Hebrews.) The resurrection presents clear evidence that God has accepted Jesus’ sacrifice and that he has established a new covenant on that basis.
Jesus is presented as that great Shepherd of the sheep. He will lead us through any circumstances which threaten our peace with God.
The writer of Hebrews prayed that God would bring out the full potential of each believer. This might reconcile factions in the church, or it might produce individual believers who were fully developed and mature. The supreme desire of the prayer was that God would provide the readers with everything good for doing his will and to produce in their lives only what is pleasing to him. The work of God is necessary to make man’s work a reality. If God produces in us what is pleasing to him, we will be supremely equipped to do his will.
The prayer concludes with a doxology. Grammar would let the praise be directed either to Jesus or to the Father. Likely the author calls for eternal glory to the Father. We can only give an Amen to thoughts about God as wonderful as these.