Isaiah 48:15

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, ( Numbers 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, ( Isaiah 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, ( Hebrews 5:4 Hebrews 5:5 ) : I have brought him; from a far country, from Persia to Babylon; and who has also brought forth his servant, the branch, the Messiah, ( Zechariah 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, ( Isaiah 45:1-3 Isaiah 45:5 Isaiah 45:13 ) 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, ( Isaiah 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.