International Standard Version "Therefore, for your own sake, be very careful, since you did not see any form on the day that the LORD your God spoke to you in Horeb from the midst of the fire.
American Standard Version 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.
Young's Literal Translation 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,