The Sacred Promise offers scientific proof of Spirit's existence-be it the deceased, angels, or spirit guides-and shows Spirit's willingness and promise to offer guidance and help with the challenges of day-to-day living. The Sacred Promise brings us into the laboratory of scientist Dr. Gary Schwartz, where he establishes the existence of Spirit by its own Willful Intent-a proof of concept for deceased spirits. The author takes readers on a personal journey into the world of angels and spirits and reveals their existence and desire to help.