Genesis 19:26
Then the wife of Lot looked back from behind him, and she became a pillar of salt.
Genesis 19:17
And it came to pass as they brought them forth outside, that he said, Escape; for thy soul, do not look behind thee, neither stop thou in all the plain; escape to the mountain, lest thou be consumed.
Numbers 16:38
the censers of these sinners are sanctified against their own souls, and broad plates shall be made of them for a covering of the altar, for they offered with them before the LORD; therefore, they are sanctified, and they shall be a sign unto the sons of Israel.
Proverbs 14:14
The backslider in heart shall be filled with his own ways, and the good man shall be separated from him.
Luke 17:31-32
In that day, he who shall be upon the housetop and his stuff in the house, let him not come down to take it away; and he that is in the field, let him likewise not turn back.
Hebrews 10:38
Now the just shall live by faith, but if any man draws back, my soul shall have no pleasure in him.