Ge 12:1 Now the LORD had said to Abram: "Get out of your country, From your family And from your father's house, To a land that I will show you.

2 I will make you a great nation; I will bless you And make your name great; And you shall be a blessing.

3 I will bless those who bless you, And I will curse him who curses you; And in you all the families of the earth shall be blessed."

The intention of Moses here was to show his original Israelite readers that God redeeming them from Egypt and their pilgrimage to the land of promise was the beginning of the fulfillment of God's promises to Abraham. He is convincing them of their privileged and blessed calling in Abraham. God's promises to Abraham was God's promises to Israel.