"Will you swear upon the Cross it is the truth?"

And I swear upon my soul no harm will come to you while you're with me.

I swear it on our love, upon my life and upon your death.

I swore it upon my own mother's spirit, may she rest in peace.

Mungabo swore upon his return that he saw the plane go down in the sea.

"I swear upon my soul that I have never in this world done it before."

I have sworn the oath of blood upon our father's grave.

He had sworn his oath of office upon it.

She even swears upon the teacher's child's life to prove her case at the panchayat.

After the war, Zeus promised every oath be sworn upon her.