Good News Translation
According to the story I heard, a demon killed them. He doesn't harm Sarah, but he kills every man who tries to get near her. I am afraid of this demon. I am an only child, and if I were to die, the sorrow would send my parents to their graves. They don't even have another son to bury them."

New Revised Standard Version
But Raphael said to him, “Do you not remember your father’s orders when he commanded you to take a wife from your father’s house? Now listen to me, brother, and say no more about this demon. Take her. I know that this very night she will be given to you in marriage.

Contemporary English Version
It doesn't harm her; it just kills anyone who tries to marry her. I am an only child, and if I were killed by that demon, my parents would have great sorrow and be left with no one to bury them.

New American Bible
So now I too am afraid of this demon, because it is in love with her and does not harm her; but it kills any man who wishes to come close to her. I am my father’s only child. If I should die, I would bring the life of my father and mother down to their grave in sorrow over me; they have no other son to bury them!”

Douay-Rheims Bible
Now I am afraid, lest the same thing should happen to me also: and whereas I am the only child of my parents, I should bring down their old age with sorrow to hell.

Now I am afraid, lest the same thing should happen to me also: and whereas I am the only child of my parents, I should bring down their old age with sorrow to hell.

Tobit 6:13
Ask her therefore of her father, and he will give her thee to wife.

Tobit 6:14
Then Tobias answered, and said: I hear that she hath been given to seven husbands, and they all died: moreover I have heard, that a devil killed them.

Tobit 6:16
Then the angel Raphael said to him: Hear me, and I will shew thee who they are, over whom the devil can prevail.

Tobit 6:17
For they who in such manner receive matrimony, as to shut out God from themselves, and from their mind, and to give themselves to their lust, as the horse and mule, which have not understanding, over them the devil hath power.