owe, must, have to
You owe him allegiance.
— Le Seigneur des anneaux : La Communauté de l'anneau (2001)
No, you don't owe me anything.
You owe me.
Celui à qui vous devez allégeance.
The one to whom you owe allegiance.
— Le Seigneur des anneaux : Le Retour du roi (2003)
You owe it to yourself to do it.