In this book, the author aims to take readers on a personal journey into the world of angels and spirits and reveals their existence and desire to help. Dr. Schwartz discusses the challenges as well as the rewards of connecting with Spirit. He poses several questions - What if feelings of emptiness, loneliness, hopelessness, and meaninglessness are actually fostered by our belief in a 'spiritless' Universe? What if the physical hunger is symptomatic of a greater spiritual hunger? What if Spirit is actually all around people, ready to fill them with energy, hope, and direction, if they are ready to ingest it? What if Spirit is like air and water, readily available to draw within; that is, if people choose to seek it? 'Sacred Promise' tries to show how people can attune themselves and receive this guidance from Spirit, which is all scientifically documented by Dr. Schwartz experiments and research.