By the angel's advice young Tobias taketh hold on a fish that assaulteth him. Reserveth the heart, the gall, and the liver for medicines. They lodge at the house of Raguel, whose daughter Sara, Tobias is to marry; she had before been married to seven husbands, who were all slain by a devil.

6:1. And Tobias went forward, and the dog followed him, and he lodged the first night by the river of Tigris.

6:2. And he went out to wash his feet, and behold a monstrous fish came up to devour him.

6:3. And Tobias being afraid of him, cried out with a loud voice, saying: Sir, he cometh upon me.

6:4. And the angel said to him: Take him by the gill, and draw him to thee. And when he had done so, he drew him out upon the land, and he began to pant before his feet.

6:5. Then the angel said to him: Take out the entrails of this fish, and lay up his heart, and his gall, and his liver for thee: for these are necessary for useful medicines.

6:6. And when he had done so, he roasted the flesh thereof, and they took it with them in the way: the rest they salted as much as might serve them, till they came to Rages the city of the Medes.

6:7. Then Tobias asked the angel, and said to him: I beseech thee, brother Azarias, tell me what remedies are these things good for, which thou hast bid me keep of the fish?

6:8. And the angel, answering, said to him: If thou put a little piece of its heart upon coals, the smoke thereof driveth away all kind of devils, either from man or from woman, so that they come no more to them.

Its heart, etc. The liver (ver. 19)… God was pleased to give these things a virtue against those proud spirits, to make them, who affected to be like the Most High, subject to such mean corporeal creatures as instruments of his power.