Searching for a song with its meaning

[SnowDrops]

Hello !
I have been searching for a special song for a very long time, I'm posting this here as a kind of last resort.
It's a song about someone, a priest if I remember correctly, who is the confident for everyone around him. Everyone keeps telling him all their troubles but he has no one to talk to, so one day he breaks. He screams all "their sins at sea" and that makes all the fish in the sea dead.
Any leads and ideas would be helpful!
Thanks!