child when she was past age” (Hebrews 11:11). All of this emphasizes the need of God’s great power if Isaac was going to come on the scene. And the fact that Isaac was born demonstrates that God’s great power was present in a pronounced way. Frequently Scripture likes to emphasize the difficulty of the circumstances which confront the promises of God in order to show us the greatness of God’s power. God’s power is not just for easy circumstances—the extent of the faith of most of us—but it is also