At times we might think that God only rewards the "perfect" believer? But that isn't the case. In Genesis 18 we hear the story of Sarah a woman whom God had told would bear a son even though she and her husband had grown old. It's a notion, Sarah herself laughed at in the beginning. Sarah's story reminds us that God's grace is not based on our perfection, but on our willingness to trust God even in our weakness.