Exodus 23:21

Heed him, and hear his voice, and do not hold him in disregard. For he will not release you when you have sinned, and my name is in him

Other versions

King James Version

Beware of him, and obey his voice, provoke him not; for he will not pardon your transgressions: for my name is in him.

English Standard Version

Pay careful attention to him and obey his voice; do not rebel against him, for he will not pardon your transgression, for my name is in him.

New International Version

Pay attention to him and listen to what he says. Do not rebel against him; he will not forgive your rebellion, since my Name is in him.