Here is a useful graphic to help explain the Trinity:
What is wrong with simplicity in saying that which everyone in the Bible have said. Leave the word T. out and know Christ as the beloved only son of the Father in Heaven and that we as the Father's children have Christ and the Holy Spirit within us. Why add anything, isn't it complete as it has been since Christ accomplish his Father's will 2,000 years ago?
The evolution of God's word doesn't exist outside of what Christ has finished & accomplish for his Father, yet pollution does exist and is a great danger, spoken & warned about by Apostle Paul, Peter, James, John and in the N.T..
What difference does it matter anyway?! For if it wasn't important enough to be spoken of in the Bible, since the writers of the Bible were busy about the Lord's work and not busy-bodies about word plays, then it isn't important for us to consider. The academic movements of human hearts through their study of logical patterns (theories, theologies, speculations) aren't worth examining. The very words of Jesus, we should meditate upon and eat and become a part of us. Don't fasten your eyes on anything but Jesus Christ by obeying him and following him. This commitment is real. The Trinity commitment & plenty of other similar theology-based ideas are warned about through the Holy Spirit by Jesus' disciples in the NT (I don't remember the verses, but do remember reading about the warnings of what people add or interpret from the Bible, and also that these things were coming in their days, warnings of the anti-Christ's attraction to making Jesus not human and there would be more things added in the near future.)
I have no problem with someone believing in Christ & the Father & the Holy Spirit, and all being one in commitment and nature. Their analogy to us is that we are to be as they and one with each other, not to create some mysticism or new theology. What is wrong with the common sense of being one with another: like the deep love of a father and son, husband and wife, brother and brother, brother and sister, mother and child, and so, us and Christ? I don't think it is wise to make Christ more than human, for the disciples were warned by the Holy Spirit that the antiChrist will be known by doing this. I don't want to offend anyone, but I do extend the warnings of the Holy Spirit speaking through the disciples of Christ of the NT. If you know your Bible then you would know what I am speaking of. God loves courage! This is something that is real. Don't cower to anything that is questionable, especially when it shows a nature not taught by Christ (to kill, to persecute, to hate). There is a reason why we should think of Jesus Christ as a human being, for over and over again, his disciples spoke of this. Somehow, this is part of our teachings from him. Does anyone have courage to speak about this matter? Who gives you your license to fulfill the great commission or teaches you all things? It is the Holy Spirit that does this upon our hearing the Gospel of Jesus Christ and converting from the world to Jesus' way and nature.
Praise God and his son Jesus Christ.