Romans 4:18-21 (CB)

In hope he believed against hope, that he should become the father of many nations, as he had been told, “So shall your offspring be.” He did not weaken in faith when he considered his own body, which was as good as dead (since he was about a hundred years old), or when he considered the barrenness of Sarah’s womb. No unbelief made him waver concerning the promise of God, but he grew strong in his faith as he gave glory to God, fully convinced that God was able to do what he had promised.

Hope in God’s promises, therefore, is not a wishful longing but a faith-filled confidence for the future. It is simply impossible to trust one of God’s promises and not anticipate its coming true. To know God is to trust Him. And to trust God is to trust His promises. And to trust God’s promises is to be sure of their fulfillment. This assurance concerning the future, anchored in God’s promises, is what the Bible calls "hope."