First of all, I would like to tell you welcome to this forum.
It will be a pleasure for me to have a discussion with you about the trinity if you have time.
I will answer your previous post in details later on. However, I would like first to ask you a question.
If you believe that the Bible doesn't teach the trinity and it doesn't order you to teach this faith and it's just a concept that's present in the bible, do you think it's essential for me to believe in the trinity ? do you think that someone who is not able to understand the concept of trinity that's mentioned in the bible will be to hell? If I believe in a one God but I don't believe in the trinity, do you think that I am an unbeliever like athiests and those who worship cows or statues?
I am waiting for your answers and then I'll answer your post in details.