Deuteronomy 4:12

12 And the Lord spoke to you out of the midst of the fire a voice of words, which ye heard: and ye saw no likeness, only a voice.

Deuteronomy 4:12 Meaning and Commentary

Deuteronomy 4:12

And the Lord spake unto you out of the midst of the fire
For the Lord descended on Mount Sinai in a cloud, in fire, and was in the thick darkness, from whence he delivered out the ten commands:

ye heard the voice of the words;
distinctly and plainly, not only the sound of them, but the words themselves, and so as to understand what was meant by them;

but saw no similitude;
not any likeness of the person speaking, by which they could form any idea of him in their minds, which was purposely done to prevent idolatry:

only ye heard a voice;
that was all.

Deuteronomy 4:12 In-Context

10 the day in which ye stood before the Lord our God in Choreb in the day of the assembly; for the Lord said to me, Gather the people to me, and let them hear my words, that they may learn to fear me all the days which they live upon the earth, and they shall teach their sons.
11 And ye drew nigh and stood under the mountain; and the mountain burned with fire up to heaven: darkness, blackness, tempest.
12 And the Lord spoke to you out of the midst of the fire a voice of words, which ye heard: and ye saw no likeness, only a voice.
13 And he announced to you his covenant, which he commanded you to keep, even the ten commandments; and he wrote them on two tables of stone.
14 And the Lord commanded me at that time, to teach you ordinances and judgments, that ye should do them on the land, into which ye go to inherit it.

The Brenton translation of the Septuagint is in the public domain.