Römer 10:20

But Esaias is very bold, and saith--that is, is still plainer, and goes even the length of saying. I was found of them that sought me not--until I sought them. I was made--"became" manifest unto them that asked not after me--until the invitation from Me came to them. That the calling of the Gentiles was meant by these words of the prophet (Isa 65:1) is manifest from what immediately follows, "I said, Behold Me, behold Me, unto a nation that was not called by My name."

The dissolving of the peculiar church-state of the Jews, and the rejection of that polity by the repealing of their ceremonial law, the vacating of all the institutions of it, the abolishing of their priesthood, the burning of their temple, and the taking away of their place and nation, and in their room the substituting and erecting of a catholic church-state among the Gentile nations, though to us, now that these things have long since been done and completed, they may seem no great matter, yet to those who lived when they were doing, who knew how high the Jews had stood in God's favour, and how deplorable the condition of the Gentile world had been for many ages, it appeared very great and marvellous, and a mystery hard to be understood. The apostle, in this chapter, as in the foregoing and that which follows, is explaining and proving it; but with several very useful digressions, which a little interrupt the thread of his discourse. To two great truths I would reduce this chapter: - I. That there is a great difference between the righteousness of the law, which the unbelieving Jews were wedded to, and the righteousness of faith offered in the gospel (Rom 10:1-11). II. That there is no difference between Jews and Gentiles; but, in point of justification and acceptance with God, the gospel sets them both upon the same level (Rom 10:12 to the end).

10:20 This quotation is from Isa 65:1. In Isaiah, the words people who were not looking for me refer to the people of Israel. As in Rom 9:25-26, Paul applies them to the Gentiles to show that God has opened the way for them to be a part of the people of God.