Are there good reasons for offering petitionary prayers to God, if God exists? Could such prayers make a difference in the world? Could we ever have good reason to think that such prayers had been answered? In this Element, the author will carefully explore these questions with special attention to recent philosophical discussions.

1. Introduction; 2. Preliminary Considerations; 3. Answered Petitionary Prayer; 4. A Survey of Defenses; 5. Epistemology; 6. Practical Considerations and Quasi-Petitionary Prayer; 7. Conclusion; References.