Hebrews 13:20

Concluding prayer. God of peace--So Paul, Rom 15:33; Rom 16:20; Co2 13:11; Phi 4:9; Th1 5:23; Th2 3:16. The Judaizing of the Hebrews was calculated to sow seeds of discord among them, of disobedience to their pastors (Heb 13:17), and of alienation towards Paul. The God of peace by giving unity of true doctrine, will unite them in mutual love. brought again from the dead--Greek, "brought up," &c.: God brought the Shepherd; the Shepherd shall bring the flock. Here only in the Epistle he mentions the resurrection. He would not conclude without mentioning 'the connecting link between the two truths mainly discussed; the one perfect sacrifice and the continual priestly intercession--the depth of His humiliation and the height of His glory--the "altar" of the cross and the ascension to the heavenly Holy of Holies. Lord Jesus--the title marking His person and His Lordship over us. But Heb 13:21, "through Jesus Christ." His office, as the Anointed of the Spirit, making Him the medium of communicating the Spirit to us, the holy unction flowing down from the Head on the members (compare Act 2:36). great-- (Heb 4:14). shepherd of the sheep--A title familiar to his Hebrew readers, from their Old Testament (Isa 63:11; Septuagint): primarily Moses, antitypically Christ: already compared together, Heb 3:2-7. The transition is natural from their earthly pastors (Heb 13:17), to the Chief Pastor, as in Pe1 5:1-4. Compare Eze 34:23 and Jesus' own words, Joh 10:2, Joh 10:11, Joh 10:14.

— Jamieson-Fausset-Brown Commentary (public domain)