"Take careful heed to yourselves, for you saw no form when the LORD spoke to you at Horeb out of the midst of the fire,
Deuteronomy 4:15
Surrounding context
4:14 And the LORD commanded me at that time to teach you statutes and judgments, that you might observe them in the land which you cross over to possess.
4:15 "Take careful heed to yourselves, for you saw no form when the LORD spoke to you at Horeb out of the midst of the fire,
4:16 lest you act corruptly and make for yourselves a carved image in the form of any figure: the likeness of male or female,