But I'm a SWORN brother
of the Night's Watch now.
Game of Thrones Season 5, Episode 1
I was Jeffrey's SWORN shield.
Game of Thrones Season 3, Episode 4
I've SWORN to serve the Lord of Riverrun
and obey his commands.
Game of Thrones Season 6, Episode 8
I am SWORN to serve you.
Game of Thrones Season 3, Episode 3
and SWORN to take revenge against you.
Game of Thrones Season 4, Episode 5