I'm not a PRS judge, but I think I can speak.
Just for edification on the rules, alluding to biblical characters is not a
big deal. The intent of the rules is "extolling of a deity" or
"glorification of religious beliefs". So, anthems/hymns are generally
professing a belief and can be called into question. The song Jezebel is
merely stating that "you are just like the character Jezebel". It wouldn't
raise an eyebrow from a PRS judge on the standpoint of religion. Perhaps on
taste, and that I can't begin to answer.
MUS-wise on the popular chart, it is woefully weak on barbershop sevenths
and harmonic richness/circle of fifths motion. Structurally, I don't hear
an arrangement in my head that would sound remotely close to barbershoppy
enough for contest, but judgment is always made in a live setting and who
knows what someone might do.