Powers of the Psalms by Anna Riva is a classic guide to the spiritual use of the biblical Psalms. This book teaches how each Psalm can be used for specific intentions such as protection, love, prosperity, success, blessings, and spiritual strength. It provides practical guidance on prayers, rituals, and spiritual purposes for all 150 Psalms, making it a valuable reference for those who work with prayer-based spiritual practices and traditional folk spirituality.