Any OATH that you swear
on these rings must be honored and kept.
Vikings Season 1, Episode 1
You swore the king an OATH, my lord.
Game of Thrones Season 1, Episode 1
I swore an OATH to House Tyrell.
Game of Thrones Season 7, Episode 2
You swore an OATH to me.
Game of Thrones Season 1, Episode 6
for your violation of your sacred OATH
to marry one of his daughters.
Game of Thrones Season 3, Episode 6