I'm sorry Trinity is an essential belief.
Can't read to well can you? I did not say the "DOCTRINE" of the trinity is not essential, what I said was that the "TERM" trinity was not essential.
Tertullian wasn't always a Montanist and he did coin the phrase Trinity as it wasn't named previously but it was believed it just wasn't defined.
Ahhh! Confession is good for the soul. Hence, the term is not essential for the doctrine! Neither did the council of Nicea coin the term! Hence, the doctrine is provided by the scriptures not by Nicean council. Hence, the doctrine was believed WITHOUT the term "trinity" and BEFORE and thus WITHOUT the Nicean council. And so it can be taught today by scriptures alone without every mentioning the word "trinity."