be bound

See: answer, avow, owe
References in classic literature ?
the first person I meet in the street is bound to be my second, just as he would be bound to pull a drowning man out of water.
For if I be bound to pray for all that be in distress, I am sure that I am bound, so far as it is in my power, to practice what I pray for.
She thinks there's nothing belongs to being a lady's maid but wearing finer clothes nor she was born to, I'll be bound.