The laws of the excluded middle and contradiction do not undermine monotheism, they demand it. They undermine the trinity which is rank paganism. Logic can be seen as negative theology (what God isn’t) while revelation is positive theology (what God is)... We can observe the infinite regress of divine powers in the Catholic Church in ways such as Mary being called “The Mother of God”, calling Anne “The Grandmother of God”, the Immaculate Conception not only of Jesus but of Mary along with her perpetual virginity, the never ending litany of new Saints, doctrinal infallibility...
The above are a more or less random snatches from a theological argument of the kind that normal people cannot possibly understand. Moreover, in a scientific age, the currency of such arguments dooms Christianity.
Today, no one with a reasonably broad education can accept that an anthropoid ape was the mother of the entity responsible for the creation of the universe, whether that entity be of single or a triple personality. Equally, the idea that the creator of the universe cares about being praised by a bunch of jumped-up talking apes is absurd. Thus, the future of Christianity, if it has one, will be based not on an understanding of arcane and utterly useless theological debates, but on sociology.