'Form' in the Bible

the LORD your God spoke from the midst of the fire. You heard the sound of words, but you saw no form; there was only a voice.

"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.

Be careful! Otherwise, you will be destroyed when you make carved images for yourself all sorts of images in the form of man, woman,

"After you've borne children and grandchildren, have been there for a long time in the land, have become so corrupted that you make images of any form, and have done evil in the eyes of the LORD your God, you will provoke him to anger.

"When you are encamped for battle against your enemies, be on guard against every form of impropriety.