This document summarizes a Bible passage about God fulfilling his promise to Abraham and Sarah of giving them a son, despite their old age. It discusses how Abraham and Sarah initially doubted God's promise since it seemed impossible given their circumstances. However, God remained faithful and demonstrated his power by enabling Sarah to conceive. The document encourages putting one's faith in God, even when his promises seem impossible, as he is able to do all things and fulfills his word in his perfect timing. It suggests embracing God's plan, even if different than one's own, and sharing testimonies of his faithfulness with others facing difficulties.