What did he think when God said, "You see all those stars? Your family is going to be bigger than that!" He probably felt the same way i sometimes do about the promises of God. "God, i believe you because - you're God! But... i don't see how that could possibly happen!" To think that he walked through the rest of his life walking in that unknown - walking with a promise unfulfilled, yet intact! I don't think I could do that...
But what will happen when we get to heaven and God says, "Abraham, Abraham... come up here. I want you to see something." Abraham joins his Father, his Creator, his Delight on his throne. And Father says, "Abraham -- look at your family now." Every Jew, every Old-Testament believer, every Christian all gathered in heaven - all the descendants of the one who had a glimpse of the Father-heart of God. A dream fulfilled!
"Not one of these people, even though their lives were exemplary, got their hands on what ws promised. God had a better plan for us: that their faith and our faith would come together to make one completed whole, their lives of faith not complete apart from ours."