It may seem unimportant, but he was off the track for a while. The chapter then closes with Mamre, which means “vision,” and Hebron, which is even better in its meaning, Hebron means “join together,” it means “fellowship,” which is indicative of the state of Abraham’s relationship with God. I think what God is showing us is that there is little or no fellowship with Him when one is in a state or condition of worldliness.
It is not just given to the descendants; it is given forever. And now the promise involves eternal life. So, then He turns and says,
God commanded Abram to walk. It indicates learning by experience on this pilgrimage. Learning by experience that I am with you, that I am fellowshipping with you, and that I will provide for you.
Verse 15 is certainly an indication that the promise involved eternal life.
