Exodus 14 - Moses as Mediator

After the great sin of the golden calf, Moses asks God to see His glory to know His ways. God shows Moses His reflected glory, but shields him from His face. God writes the tablets again, with no changes, to present to the people as a covenant. God instructs the Hebrews to worship Him alone, for He is a jealous god. This jealousy is a desire for an exclusive relationship, as we can see in James 4:5 and 2 Cor 11:2. God also commands that the Hebrews observe the Sabbath and the harvest feasts.

Moses comes back to the people, but shields his face with a veil to prevent the people from seeing God's glory fade. This veil separates the people from God, but Jesus removes that veil, as Jeremiah 31:31ff prophesies.