I looked up Gabriel of Sedona and it looks like he came out of main-stream as a Catholic Charismatic, becoming a counselor for youth, prisons and at half-way houses. His web site, however, is very new age:
He is credited as having brought through the continuation of The URANTIA Book, called Continuing Fifth Epochal Revelation, in which The URANTIA Book is the first one-tenth. However, it is
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"Cults," Sects, and "New Religious Movements"