For the phrases “If the Lord of hosts had not left us a few survivors, we would have been like Sodom, and become like Gomorrah,” see Romans 9:29.

Note that this quote in the New Testament is not taken from the Hebrew Bible but from the Greek Septuagint (LXX) which translates into English as “And if the Lord Sabaoth had not left us offspring, we would have become like Sodoma and been made similar to Gomorra.'” (Translation by NETS — for the Greek version see the title’s tooltip)