To know more about the UPC, please see Thomas Fudge’s unbiased book, “Christianity Without the Cross: A History of Salvation in Oneness Pentecostalism.” See here:
I was a Oneness Pentecostal for over 20 years, and I am now the President of a Non-profit organization call the Association of Former Pentecostals. If the owners of this site do not mind, here is our main website:
(I hope I am not breaking any rules here with the link.)
When people leave these Oneness Pentecostal churches, they go through a tremendous amount of emotional turmoil. I estimate that most people take from 5-7 years to recover from certain types of Pentecostalism, and in particular, Oneness Pentecostalism, of which UPC is the largest organization. There appears to be an excess of power and control in the Oneness organizations.
As the moderator has posted, the Rick Ross site has a good amount of information on the organization. You need to get Fudge’s book for a serious scholarly perspective, then you will see that this is an organization with more problems than you might be willing to deal with.