Tobit 6:18

18 But thou when thou shalt take her, go into the chamber, and for three days keep thyself continent from her, and give thyself to nothing else but to prayers with her.

Tobit 6:18 In-Context

16 Then the angel Raphael said to him: Hear me, and I will shew thee who they are, over whom the devil can prevail.
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.
18 But thou when thou shalt take her, go into the chamber, and for three days keep thyself continent from her, and give thyself to nothing else but to prayers with her.
19 And on that night lay the liver of the fish on the fire, and the devil shall be driven away.
20 But the second night thou shalt be admitted into the society of the holy Patriarchs.
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