What does Deuteronomy 5:25 mean?

Yahweh spoke these words to all your assembly on the mountain out of the middle of the fire, of the cloud, and of the thick darkness, with a great voice. He added no more. He wrote them on two stone tablets, and gave them to me.

When you heard the voice out of the middle of the darkness, while the mountain was burning with fire, you came near to me, even all the heads of your tribes, and your elders;

and you said, “Behold, Yahweh our God has shown us his glory and his greatness, and we have heard his voice out of the middle of the fire. We have seen today that God does speak with man, and he lives.

For who is there of all flesh, that has heard the voice of the living God speaking out of the middle of the fire, as we have, and lived?

Go near, and hear all that Yahweh our God shall say, and tell us all that Yahweh our God tells you; and we will hear it, and do it.”

Yahweh heard the voice of your words, when you spoke to me; and Yahweh said to me, “I have heard the voice of the words of this people, which they have spoken to you. They have well said all that they have spoken.