but you're trying to use your human understanding!!!

pointing out that God is, in some way, beyond our comprehension —while accepting the ascription of concepts outside of our natural human understanding— does not permit the ascription of concepts against our natural human understanding; rather, it underlines the necessity of belief within the limits of human understanding, being based on evidence and pure reason: not illogical or irrational, but consistent and coherent.
recognising that something —even God— is beyond our full comprehension doesn't imply a license for its involvement in illogical or irrational concepts