How do we know prayer is powerful in bringing about salvation?

The sermon recounts the story of a woman who prayed for her unsaved husband, demonstrating that persistent prayer plays a critical role in the spiritual lives of those we love. Such accounts testify to the truth that no case is truly hopeless while Jesus lives. The narrative of the dog leading the husband to church illustrates how God can orchestrate events through our prayers. This powerful depiction of prayer aligns with the Reformed understanding of God's sovereignty, reinforcing that He can use any means necessary, even unconventional ones, to lead His elect to salvation. Thus, we can confidently know that prayer is a fundamental avenue through which God works to fulfill His saving purposes.