Tobit 6:17

17 Then the demon will smell it and flee away, and will never again return. And when you approach her, rise up, both of you, and cry out to the merciful God, and he will save you and have mercy on you. Do not be afraid, for she was destined for you from eternity. You will save her, and she will go with you, and I suppose that you will have children by her." When Tobias heard these things, he fell in love with her and yearned deeply for her.

Tobit 6:17 In-Context

15 But the angel said to him, "Do you not remember the words with which your father commanded you to take a wife from among your own people? Now listen to me, brother, for she will become your wife; and do not worry about the demon, for this very night she will be given to you in marriage.

16 When you enter the bridal chamber, you shall take live ashes of incense and lay upon them some of the heart and liver of the fish so as to make a smoke.

17 Then the demon will smell it and flee away, and will never again return. And when you approach her, rise up, both of you, and cry out to the merciful God, and he will save you and have mercy on you. Do not be afraid, for she was destined for you from eternity. You will save her, and she will go with you, and I suppose that you will have children by her." When Tobias heard these things, he fell in love with her and yearned deeply for her.