Apparently he went around handing out hundreds of copies of his self-published books.
He converted to Islam 3 years ago.
Before that, he wrote a Christian holistic health book:
At Home with God: A Complete Liturgical Guide for the Christian Home.
Type of Work: Text
Registration Number / Date: TX0007983161 / 2014-10-10
Application Title: At Home with God: A Complete Liturgical Guide for the Christian Home.
Title: At Home with God: A Complete Liturgical Guide for the Christian Home.
Description: Book, 254 p.
Copyright Claimant: Gavin Long. Address: 710 Springvale Road, Great Falls, VA.
Date of Creation: 2011
Date of Publication: 2011-02-01
Nation of First Publication: United States
Authorship on Application: Gavin Long; Citizenship: United States. Authorship: text.
Pre-existing Material: Scriptures.
Basis of Claim: text.