What did God add to the Ten Commandments when He gave the Law?
When God gave the Law, He added to the Ten Commandments all the rituals, regulations, rules, and commandments for dealing with one another, called the civil law, plus stipulations for the priesthood, the ecclesiastical part, and instructions for building the tabernacle. This was part of the giving of the Law to Israel.
Les teaches that to bring in the religious system of the Law, God had to add to the Ten Commandments all the rituals, regulations, rules, and commandments of dealing with each other—the civil law—and all the stipulations for the priesthood, which is the ecclesiastical part of the Law. God also gave Moses instructions for building the tabernacle, which was accomplished while they were in the wilderness of Sinai. When the tabernacle was finished, the Shekinah glory came down upon it, and whenever the glory lifted and moved, they took down the tabernacle and followed it. That was the giving of the Law, which Israel carried after the 40 years of wilderness into the Promised Land. For years it remained a temporary little tent north of Jerusalem until God gave David, and then through his son Solomon, permission to build a permanent dwelling place, Solomon's Temple. Les notes this was all part and parcel of the giving of the Law to Israel; the Law was never given to the Gentiles, though it covered the whole human race.