Isaiah 48:15

I, even I, have spoken; yea, I have called him: I have brought him, and he shall make his way prosperous.

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: 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 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.

{m} wkrd xyluhw "et prosperabitur via ejus", Pagninus, Montanus; "critique prospera via ejus", Vitringa.