What Does It Mean?

I really love the song Take Me to Church by Hozier. There's songs that makes me want to dance or take a vacation to a santa monica dance studios I call these "summer songs" like Taylor Swift's Shake It Off. When I heard Take Me to Church by Hozier I knew it wasn't a summer song. It was perfect because I was just complaining about how all music was too light and fluffy for winter and fall. It has a lot of soul to it and is moodier. It obviously means something big. I've listened to interviews from him as well as read lots of opinions on what it means and I get the general idea but I know that there's more and more to discover about it.