Deuteronomy 4:15
Take ye therefore good heed unto yourselves; for ye saw no manner of similitude on the day that the LORD spake unto you in Horeb out of the midst of the fire:
Take ye therefore good heed unto yourselves,.... As to keep all the laws given them, so particularly to avoid idolatry:
for ye saw no manner of similitude on the day the Lord spake unto you in Horeb out of the midst of the fire; and therefore, as they had nothing that directed and led them, so they had nothing that could be a temptation to them, to make any form or likeness, and worship it.