Isaiah 1:9

1:9 If the Lord who commands armies had not left us a few survivors,

we would have quickly become like Sodom,

we would have become like Gomorrah.

Isaiah 10:20-22

10:20 At that time those left in Israel, those who remain of the family of Jacob, will no longer rely on a foreign leader that abuses them. Instead they will truly rely on the Lord, the Holy One of Israel. 10:21 A remnant will come back, a remnant of Jacob, to the mighty God. 10:22 For though your people, Israel, are as numerous as the sand on the seashore, only a remnant will come back. Destruction has been decreed; just punishment is about to engulf you.

Romans 11:4-5

11:4 But what was the divine response to him? “I have kept for myself seven thousand people who have not bent the knee to Baal.”

11:5 So in the same way at the present time there is a remnant chosen by grace.