The midst of heaven Flaming up into the air, which is often called heaven. No similitude No resemblance or representation of God, whereby either his essence, or properties, or actions were represented, such as were usual among the heathen.
Related Commentaries of Deuteronomy 4:11
Deuteronomy 4:11-12
11 And ye came near and stood under the mountain; and the mountain burned with fire unto the midsta of heaven, with darkness, clouds, and thick darkness.
12 And the LORD spake unto you out of the midst of the fire: ye heard the voice of the words, but saw no similitude; onlyb ye heard a voice.