# the God of your father, the God of Abraham, the God of Isaac, and the God of Jacob

All of these men worshiped the same God. Alternate translation: "the God of your father, of Abraham, of Isaac, and of Jacob"

# your father

Possible meanings are 1) "your ancestor" or 2) "your father." If it means "your ancestor," then the phrases following it clarify who "your father" refers to: it refers to Abraham, Isaac, and Jacob. If it means "your father," then it refers to Moses's own father.