Mount Sinai
God told Moses the laws that were to be applied to the people. God instructed Moses on how to build a Tabernacle and an Ark (Exodus 25:10: of acacia wood, 3 3/4 ft. long, 2 1/4 ft. wide, 2 1/4 ft. high overlayed with gold (inside and out) containing inside the stone tablets engraved with the Ten Commandments). The Ark would be a place in the Holy of Holies for God to reside. Aaron and his sons were designated as the priests for God. The requirements for altars, incense, and offerings were described to Moses by God. Moses first went to Mt. Sinai to get the Ten Commandments and was there for 40 days and 40 nights.
Since Moses was gone so long, his brother, Aaron, at the request of the people built a golden calf that they all worshipped. Moses saw this and, in disgust, destroyed the stone tablets of the Ten Commandments that God had given to him. He then went back to Mt. Sinai for another 40 days and 40 nights and made a contract (or Covenant) with God to not destroy the people if they would obey the Ten Commandments.
In Exodus 18.13 we read, "And it came to pass on the morrow, that Moses sat to judge the people: and the people stood by Moses from the morning unto the evening." And Moses said to his father in law, 'Because the people come to me to inquire of God. When they have a matter, they come to me; and I judge between one and another, and I make them know the statutes of God and his Laws ..Exodus 18.15-16 ".. Jesus plainly said they were to observe and do what the scribes and Pharisees said but to beware of the doctrines of men which are added to the Laws of God!
"Moses seat" at the Chorazin synagogue.