“And I will make of you a great nation, and I will bless you and make your name great, so that you will be a blessing” (12:2). God’s original plan to fill the earth with His glory through all His image-bearers, men and women, now had to find another way through the calling of Abram’s family. Still sinners themselves, their first step was to leave their homeland and their family and to follow God (12:1), choosing His will over the normal life of their culture.
On the basis of the promise, without seeing the final goal, Abram “built there an altar to the Lord” (12:7). God calls us to trust and follow Him without reserve.