 Hebrews chapter 10, he says these words in verse 35. Don't throw away your confidence, which has great reward. Don't throw away your confidence, for you have need of endurance, so that when you have done the will of God, you may receive what is promised. For yet in a very little while, he who is coming will come and will not delay, but my righteous one shall live by faith. And if he shrinks back, my soul has no pleasure in him. Don't go backwards, he says.