it's so totally understandable why JWs [former too]have such a problem with the trinity concept. The WTS talks always about how good the bible is and it's God's word and all that, but then tells you that the bible doesn;t mean what it says. Doomed to be like posters we all love to debate with. I'll be a brief as possible. Below from the NWT states explicitly that the Holy Spirit is God and Jesus is God.
Acts 5'3 But Peter said: “An·a·ni′as, why has Satan emboldened you to lie+ to the holy spirit+ and secretly hold back some of the price of the field?4 As long as it remained with you, did it not remain yours? And after it was sold, was it not in your control? Why have you thought up such a deed as this in your heart? You have lied, not to men, but to God.”
This one [explicitly prophesying Jesus IS GOD] is from
IS 96 For a child has been born to us,+A son has been given to us;And the rulership* will rest on his shoulder.+His name will be called Wonderful Counselor,+ Mighty God,+Eternal Father, Prince of Peace.
One for Cofty- We have 3 dimensions in our reality. We have [and can observe] length, depth and height. Engineers will use the terms x,y and z axis, carpenters like Jesus would use the square, level and plumb. When you have three dimensions, you can see a clear picture in 3 dimensions. Take away a dimension and you have a lesser picture or view. Height is not more important than depth, and width is not more important than height, these dimensions work together to give us a clearer view and do not contradict at all. They work together to create an image that we can see. The trinity could be explained like that without committing heresy.