As Isaiah had said before — Namely, Isaiah 1:9, concerning those who were besieged in Jerusalem by Rezin and Pekah. Unless the Lord had left us a seed — Which denotes, The present paucity: The future abundance. We had been as Sodom — So that it is no unexampled thing for the main body of the Jewish nation to revolt from God, and perish in their sin.
Related Commentaries of Romans 9:29
Romans 9:29
29 And as Esaias said before, Except the Lord of Sabaoth had left us a seed, we had been as Sodoma, and been made like unto Gomorrha.