If it please Your Grace,
he has taken a holy VOW of silence.
Game of Thrones Season 5, Episode 10
I've broken a sacred VOW.
Game of Thrones Season 3, Episode 5
I took a VOW.
Game of Thrones Season 2, Episode 2
A complication
does not release you from a VOW.
Game of Thrones Season 4, Episode 1
I swore a VOW to the Night's Watch.
Game of Thrones Season 5, Episode 2