Mose’s role emphasized the transcendence of God, while Jesus’ role emphasized the immanence of God.
Mose’s visit on the mountain demonstrated the holiness of God. Jesus’s visit on the mountain demonstrated the hope of God.
Mose’s visit on the mountain showed how unworthy people are to approach God. Jesus’s visit on the mountain showed how a great high priest allows us to approach God.
Mose’s expectation on the mountain was the obedience of the people to create a new culture. Jesus’s expectation on the mountain was the participation of the people in creating a new culture.