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 therefore good heed to yourselves; for you saw no manner of form on the day that Yahweh spoke to you in Horeb out of the midst of the fire.

Take ye therefore good heed unto yourselves; for ye saw no manner of form on the day that Jehovah spake unto you in Horeb out of the midst of the fire.

and ye have been very watchful of your souls, for ye have not seen any similitude in the day of Jehovah's speaking unto you in Horeb out of the midst of the fire,

So since you saw no form of any kind on the day the LORD spoke to you out of the fire at Horeb, be careful