
No act done in service
of the Lord of Light can ever be a SIN.
Game of Thrones Season 3, Episode 5

Wholly without SIN?
Game of Thrones Season 6, Episode 1

Bearing false witness before the gods
is as grave a SIN as any, my lady.
Game of Thrones Season 5, Episode 6

"for now they see if not for a SINgle SIN
they concealed, they were saved."
Game of Thrones Season 6, Episode 1

And only confession can purge SIN.
Game of Thrones Season 6, Episode 1