...anybody remember Garner Ted Armstrong from the 1970s?
The Worldwide Church of God was destroyed by Armstrong's successors. A former WCG minister formed the Philadelphia Church of God. The PCG sued the remnant of the WCG for the rights to Armstrong's work.
Most of the books authored by Herbert W. Armstrong, and many new ones, are available free at thetrumpet.com. The book linked in post nine is one of them.