# Now

This word marks the switch from telling about Moses to explaining how what Moses said proves that people rise from the dead.

# he is not the God of the dead, but of the living

"the Lord is not the God of dead people; he is the God of living people".  Since these living people died physically, they must still be alive spiritually. 

# because all live to him

"because in God's sight they all are still alive" or "because they live in God's presence"