Genesis 12:2-4

“I will make you into a great nation, and I will bless you; I will make your name great, and you will be a blessing. I will bless those who bless you, and whoever curses you I will curse; and all peoples on earth will be blessed through you.” So Abram went, as the LORD had told him; and Lot went with him. Abram was seventy-five years old when he set out from Harran.