John Chrysostom, on Rom 10:20

“But Isaias is bold, and saith: I was found by them that did not seek me: I appeared openly to them that asked not after me.”

“"But Esaias is very bold, and saith." Now what he means is something of this kind. He put a violence on himself, and was ambitious to speak, not something veiled over, but to set things even naked before your eyes, and choosing rather to run into dangers from being plain spoken, than by looking to his own safety, to leave you any shelter for your impenetrableness; although it was not the manner of prophecy to say this so clearly; but still to stop your mouths most completely, he tells the whole beforehand clearly and distinctly. The whole! what whole? Why your being cast out, and also their being brought in; speaking as follows, "I was found of them that sought Me not, I was made manifest of them that asked not after Me." Who then are they that sought not? who they that asked not after Him? Clearly not the Jews, but they of the Gentiles, who hitherto had not known Him. As then Moses gave their characteristic mark in the words, "no people" and "a foolish nation," so here also he takes the same ground to point them out from, viz. their extreme ignorance. And this was a very great blame to attach to the Jews, that they who sought Him not found Him, and they who sought Him lost Him.”

Imported from an open dataset — not yet checked against the printed edition.