14. Then Tobias responded, and he said: "I hear that she has been given to seven husbands, and they passed away. But I have even heard this: that a demon killed them.
15. Therefore, I am afraid, lest this may happen to me also. And since I am the only child of my parents, I might send their old age with sorrow to the grave."
16. Then the Angel Raphael said to him: "Listen to me, and I will reveal to you who they are, over whom the demon can prevail.
17. For example, those who receive marriage in such manner as to exclude God from themselves and from their mind, and in such a manner as to empty themselves to their lust, like the horse and mule, which have no understanding, over them the demon has power.
18. But you, when you will have accepted her, enter the bedroom and for three days keep yourself continent from her, and empty yourself to nothing other than prayers with her.
19. Moreover, on that night, burn the liver of the fish like incense, and the demon will be put to flight.
20. In truth, on the second night, you will become ready to receive a physical union like that of the holy Patriarchs.