After delivering the Israelites from Pharaoh and their bondage in Egypt, God gave them the Ten Commandments (Exodus 20:3-17). These commandments served as a foundation for the rest of the law.
Yet in a sense, this foundation also had a foundation. The Ten Commandments provided the basis for the law, but the only reason the law mattered was because of the one who gave the law. So who was the lawgiver? That was God. They needed to understand this in order to appreciate the importance of the laws that were given. They were reminded of this in the “preface” to the Ten Commandments:
“I am the Lord your God, who brought you out of the land of Egypt, out of the house of slavery” (Exodus 20:2).