Zechariah 13:7

Here is a prophecy, I. Of the sufferings of Christ, of him who was to be pierced, and was to be the fountain opened. Awake, O sword! against my Shepherd, Zac 13:7. These are the words of God the Father, giving order and commission to the sword of his justice to awake against his Son, when he had voluntarily made his soul an offering for sin; for it pleased the Lord to bruise him and put him to grief; and he was stricken, smitten of God, and afflicted, Isa 53:4, Isa 53:10. Observe, 1. How he calls him. "As God, he is my fellow;" for he thought it no robbery to be equal with God. He and the Father are one. He was from eternity by him, as one brought up with him, and, in the work of man's redemption, he was his elect, in whom his soul delighted, and the counsel of peace was between them both. "As Mediator, he is my Shepherd, that great and good Shepherd that undertook to feed the flock," Zac 11:7. He is the Shepherd that was to lay down his life for the sheep. 2. How he uses him: Awake, O sword! against him. If he will be a sacrifice, he must be slain, for without the shedding of blood, the life-blood, there was no remission. men thrust him through as the good Shepherd (compare Zac 13:3), that he might purchase the flock of God with his own blood, Act 20:28.

— Matthew Henry's Concise Commentary (public domain)

Expounded by Christ as referring to Himself (Mat 26:31-32). Thus it is a resumption of the prophecy of His betrayal (Zac 11:4, Zac 11:10, Zac 11:13-14), and the subsequent punishment of the Jews. It explains the mystery why He, who came to be a blessing, was cut off while bestowing the blessing. God regards sin in such a fearful light that He spared not His own co-equal Son in the one Godhead, when that Son bore the sinner's guilt. Awake--Compare a similar address to the sword of justice personified (Jer 46:6-7). For "smite" (imperative), Mat 26:31 has "I will smite." The act of the sword, it is thus implied, is GOD'S act. So the prophecy in Isa 6:9, "Hear ye," is imperative; the fulfilment as declared by Jesus is future (Mat 13:14), "ye shall hear." sword--the symbol of judicial power, the highest exercise of which is to take away the life of the condemned (Psa 17:13; Rom 13:4). Not merely a show, or expression, of justice (as Socinians think) is distinctly implied here, but an actual execution of it on Messiah the shepherd, the substitute for the sheep, by God as judge. Yet God in this shows His love as gloriously as His justice. For God calls Messiah "My shepherd," that is, provided (Rev 13:8) for sinners by My love to them, and ever the object of My love, though judicially smitten (Isa 53:4) for their sins (Isa 42:1; Isa 59:16).

— Jamieson-Fausset-Brown Commentary (public domain)