Genesis 19:26
But Lot's wife, behind him, looked back, and she became a pillar of salt.
Genesis 19:17
And as they brought them out, one said, "Escape for your life. Do not look back or stop anywhere in the valley. Escape to the hills, lest you be swept away."
Numbers 16:38
As for the censers of these men who have sinned at the cost of their lives, let them be made into hammered plates as a covering for the altar, for they offered them before the LORD, and they became holy. Thus they shall be a sign to the people of Israel."
Proverbs 14:14
The backslider in heart will be filled with the fruit of his ways, and a good man will be filled with the fruit of his ways.
Luke 17:31-32
On that day, let the one who is on the housetop, with his goods in the house, not come down to take them away, and likewise let the one who is in the field not turn back.
Hebrews 10:38
but my righteous one shall live by faith, and if he shrinks back, my soul has no pleasure in him."