Romans 9:29 : And, as Isaiah hath said before, Except the Lord of Sabaoth had left us a seed, We had become as Sodom, and had been made like unto Gomorrah. Because a few righteous people were not found in Sodom and Gomorrah, Jehovah utterly destroyed them. Even so the whole nation of Israel would have been destroyed in captivity had not there been some righteous people in the nation; these few righteous people in the nation were the seed mentioned in this quotation from Isaiah.