God's power is absolute. It's without limit and unrivaled. Nothing can stop God, thwart God, hinder God, delay God. God's power is infinite. And because God's power is unstoppable, His promises are unbreakable. Greg shows how this passage contributes to our understanding of biblical theology -how the miracle of this passage is escalated in the incarnation of Jesus-, systematic theology -how this passage highlights God's omnipotence-, and practical theology -how to respond to infertility-.