In Romans 9:29, which prophet foretold that without surviving descendants Israel would have become like Sodom?

Answer: Isaiah

"Unless the Lord of Hosts had left us descendants, we would have become like Sodom, we would have resembled Gomorrah," as Isaiah foretold.

“It is just as Isaiah foretold: “Unless the Lord of Hosts had left us descendants, we would have become like Sodom, we would have resembled Gomorrah.””— Romans 9:29 (BSB)