It does change, but it technically cant. As in sure, the pope can come and say Christianity is ok with homosexuality. But in truth, the verses is leviticus(and more) clearly state that homosexuality is not accepted and has to be punished. Thats the word of god (to them) and now theyre bending it so they dont get outdated. Religious apologists constantly try to change religion to fit our times but to understand any of the three Ibrahimic religions, you need to read the books (quran, Torah and Bible) in all of which, none of these modernizations is allowed and a true believer goes to the book. And thats what justifies (for them) any barbaric act because their book allowed it and in fact encouraged it.