Perhaps you should sink your teeth into the following “Biblical” Unitarian refutation of the Trinity. http://www.biblicalunitarian.com/articles/logic/logical-fallacies-employed-in-trinitarian-theology
It shows that scripture’s isn’t self-evident to people who read it without the light of Tradition.
Mark 7:6 He answered and said unto them, Well hath Esaias prophesied of you hypocrites, as it is written, This people honoureth me with their lips, but their heart is far from me. 7 Howbeit in vain do they worship me, teaching for doctrines the commandments of men. 8 For laying aside the commandment of God, ye hold the tradition of men, as the washing of pots and cups: and many other such like things ye do. 9 And he said unto them, Full well ye reject the commandment of God, that ye may keep your own tradition.
Colossians 2:8 Beware lest any man spoil you through philosophy and vain deceit, after the tradition of men, after the rudiments of the world, and not after Christ.