Isaiah 65:1
1“I am inquired of by those who didn’t ask. I am found by those who didn’t seek me. I said, ‘See me, see me,’ to a nation that was not called by my name.
Wesley: the primary sense is the conversion of the Gentiles upon the rejection of the Jews for contempt and crucifying of Christ; St. Paul, Rom. 10:20, expressly so applies it. Sought—a diligent enquiry in things relating to God. I invited whole nations by the preaching of my gospel, doubling my words, unto a nation not called by my name, with whom I was not in covenant.
Here I am, here I am is importunity—the gospel sincerely held out to those who had not asked. Nations first; then the church gathered from them. Shared ground with Calvin: Paul reads Gentiles here.
Calvin: the Gentiles were anticipated by grace and brought no merit; they neither call on the Lord, nor seek him, nor think about him. Behold I, behold I—he has manifested himself so that foreign nations do not doubt he dwells in the midst of them. Paul says Isaiah boldly affirms the Gentiles have been called; we were called by an eternal purpose long before the event.
Grace first, no seeking merit. Same Here I am to a nation not called by his name; the accent is anticipation of the unseeking, not their inquiry.
Key contrast Both take 65:1 with Paul (Rom 10:20) as Gentiles found by the gospel. Arminians emphasize a sincere, doubled invitation to whole nations who had not asked. Reformed readers stress that the Gentiles were anticipated by grace with no merit, called by an eternal purpose. Here I am, here I am, God says to a nation that was not called by his name.