Some interesting facts I think worthy of note:
Quote from New Catholic Encyclopedia: The formulation ‘one God in three Persons’ was not solidly established, certainly not fully assimilated into Christian life and its profession of faith prior to the end of the fourth Century. Among the Apostolic Fathers there had been nothing even remotely approaching such a mentality or perspective’ Unquote.
The ante-Nicene Fathers we’re acknowledged to have been leading religious teachers in the early centuries after Christ’s birth. What they taught is of interest. In summing up the historical evidence Alyan Lamson says in ‘The Church of the First Three Centuries: Quote: The modern popular doctrine of the Trinity ...derives no support from the language of Justin Martyr; and this observation may be extended to all the ante-Nicene Fathers; that is; to all Christian writers for
three centuries after the birth of Christ. It is true, they speak of the Father, Son, and ....Holy Spirit, but not as co-equal, not as one numerical essence, not as Three in One, in any sense now admitted by Trinitarians. The very reverse is the fact.” Unquote.