Romans 10:20

And Isaiah is very bold, and he saith, I was found of them that sought me not; I became manifest unto them that asked not of me.

The passage Paul here quoted from Isaiah 65:2 reads thus in the Old Testament.

I am sought of them that asked not for me; I am found by them that sought me not: I said, Behold me, behold me, unto a nation that was not called by my name.

Since God is the author of the words Paul quoted, the expression "is very bold" cannot refer to God, but is a comment on the dramatic plainness of the prophecy. The very word "Gentiles" means "nations," and a nation not called by God's name could have no other signification than that of "Gentile." It is as though Paul had said, Look; here is a prophecy in bold face type and capital letters! As frequently elsewhere, and as we might even say, as usual, Paul rearranges the clauses. His purpose of introducing this text was to present the startling contrast between the attitude of the Gentiles who welcomed the gospel, and that of the Jews whose disobedience and gainsaying were scandalous. This verse shows the attitude of the Gentiles, the following verse that of the Jews.