7 And Moses came and called for the elders of the people, and laid before their faces all these words which the Lord commanded him.
8 And all the people answered together, and said, All that the Lord hath spoken we will do. And Moses returned the words of the people unto the Lord.
9 And the Lord said unto Moses, Lo, I come unto thee in a thick cloud, that the people may hear when I speak with thee, and believe thee for ever. And Moses told the words of the people unto the Lord.
The Lord had revealed to Moses His desire to make covenant and promise to the Israelites, but before doing so the Israelites needed to answer His offer. So Moses came down to the people, carrying with him the Lord’s words written down, and laid it before them to see what they would do with it.
Obviously, the Israelites had had their times of faithlessness and contention, but at this point they boldly declared their commitment. They were absolute in it as well, “all that the Lord hath spoken we will do.” Moses brought the words back to the Lord, and God revealed a very special plan. Not only would He give His covenant to the people, He would allow them to hear His voice directly in their own ears. Moses would still stand as a representative between the two, but the people would be able to listen in, receiving a personal testimony of the mind, will, and promise of the Lord.
Now, to be clear, the record is a little ambiguous as to whether they heard the entire set of laws that God spoke to Moses, or whether they only heard God calling out to Moses at the beginning and the rest of the transmission was related to them afterwards. In either case, the hearing of God’s word can be seen as something like a signature seal upon the law that He would give to them, assuring the people that it really came from Him and no other.
And this, of course, is something that has to be reenacted with each of us in our personal lives. We may have been told the good news by others, but God’s great desire is to speak His confirmation of it personally into our own ears. This example of the Israelites tells us the recipe that we can follow to have that same blessed result. After we have sought Him, and declared our commitment to do all that He has spoken, and purified ourselves, we can receive His word confirming His Law. Then we will know that the law is not just a law, but The Law, and that its author is God, not man.