Isaiah 53:1
1Who has believed our message? To whom has the LORD’s arm been revealed?
Who has believed our message? To whom has the LORD’s arm been revealed? Wesley: Who—Who, not only of the Gentiles, but even of the Jews, will believe the truth of what I say? And this premonition was highly necessary, both to caution the Jews that they should not stumble at this stone, and to instruct the Gentiles that they should not be seduced with their example. The arm—The Messiah, called the arm or power of God, because the almighty power of God was seated in him. Revealed—Inwardly and with power.
Few believe; the arm is the Messiah himself, revealed inwardly. Both confess: who has believed; the arm of the LORD revealed. Shared christology: both camps hear this report as of Christ the Servant of 52:13; do not invent a fight on whether the Servant is Christ. Compare 52:10: the holy arm bared before the nations is now this revealed arm. Those who do not believe do not fail because no report was spoken.
Who will believe our report? Calvin: this division of the chapter ought to be disregarded; it ought to have begun with 52:13. Having said that the name of Christ would be everywhere proclaimed, and yet would have so mean an aspect that it might appear as if these things were fabulous, he exclaims that nobody will believe those things. Of those who hear the Gospel scarcely a hundredth person will be a believer. To whom is the arm of Jehovah revealed? To suppose that by the word Arm Christ is meant is, in my opinion, a mistake; it assigns the cause why there are so few that believe: they cannot attain it by the sagacity of their own understanding. John and Paul quote this (John 12:37; Romans 10:16). The external voice is of no avail if it be not accompanied by a special gift of the Spirit; the difference proceeds from the secret election of God, the cause of which is hidden in himself.
Few believe because the Spirit must reveal; the report is still of Christ from 52:13. Either reading: unbelieved report; arm revealed. Shared christology: Calvin does not deny that the song is of Christ; he denies that Arm here means Christ as a title. See John 12 and Romans 10. Election is hidden in God, not waiting on our sagacity. Do not split 52:13–15 from this chapter; Calvin's own seam.
Key contrast Both hear a report of the Servant few will believe, the arm of the LORD needing to be revealed. Wesley takes the arm as the Messiah himself, the power of God seated in him, revealed inwardly and with power. Calvin takes Arm not as a title of Christ but as the cause of fewness: no sagacity of our own attains it; the external voice is of no avail without a special gift of the Spirit, the difference from secret election. Shared and christological referent: the same Servant of 52:13, not a second gospel.