When did the apostasy begin in early Christianity?

By apostasy, I primarily mean the father and the son, Jehovah and Jesus being one entity? What was the early foundations of the trinity? am currently reading through the supposed "Church fathers" to try to get an idea. I know some members here are very knowledgeable about early Christianity.

 

[The God Pill]

Went back to reading a bit of that early 4th century church history book yesterday and according to it Jesus half brother James sons had prominent positions in the Jersusalem congregation after his martyrdom a few years before Jerusalem's destruction and after it and there sons after them apparently at one point Jesus great nephews were arrested and brought before one of the emperors at a time many of those with verifiable davidic ancestry were being eliminated but after it became clear they had no worldly political ambitions and they explained the whole Christianity thing they were let go as not a threat.

 

[The God Pill]

It's been a while since I posted here I don't have any fresh apostasy research to post but wanted to encourage participation, contribution, input etc in the discussion.

 

[The God Pill]

Finished 4 (of 10) books of church history now. Nothing yet significant since last update on it except Papias had a very similar view of the resurrection and the millennial reign to Witnesses something Eusbesius of Caeserea was critical of in more of portraying the guy as a simpleton dismissively than condemning his character this might be because the proto Catholic church was on the fence on whether revelation should be canon or not Caeserea doesn't seem to have been a fan of Revelation but admitted a comparison to the old testament prophets work would be the right method to determine it's status.