John Gill

I, even I, have spoken,.... What I will do, and what shall certainly come to pass; for not one word of the Lord ever fails; what he has spoken he will make good; what he has said to his Son in his council, and in covenant, or has delivered out by promise or prophecy, Num 23:19, yea, I have called him; not Abraham, as the Targum; but Cyrus, whom he called by name, as well as called him to his work and office as a deliverer of his people, Isa 45:4 and so he called Christ also to his work and office, which he did not take to himself, but was called of God, Heb 5:4, I have brought him; from a far country, from Persia to Babylon; and who has also brought forth his servant, the branch, the Messiah, Zac 3:8, and he shall make his way prosperous; or "his way shall be prosperous" (m); being made so by the Lord, who directed his way, and removed all difficulties and obstructions in it, Isa 45:1 and so the pleasure of the Lord has prospered in the hands of Christ, who has succeeded in the work of redemption and salvation he was called to, Isa 53:11, these are the words of God the Father, confirming what the Messiah said in the preceding, and who is introduced speaking in the next verse. (m) "et prosperabitur via ejus", Pagninus, Montanus; "critique prospera via ejus", Vitringa.