The church is an organisation that institutionalises an aversion to homosexuality, it institutionalises gender inequality and it speaks from a place of teaching people being ashamed of their sexuality.
HozierSexuality, and sexual orientation - regardless of orientation - is just natural. An act of sex is one of the most human things. But an organization like the church, say, through its doctrine, would undermine humanity by successfully teaching shame about sexual orientation - that it is sinful, or that it offends God. The song is about asserting yourself and reclaiming your humanity through an act of love.
Hozier