The Book of Tobit 6:3 Komentaryo

The angel said to Tobias, "Take hold of the fish's gill, and draw it to you." The Lord took hold of the devil, and he who sought to capture him in death was himself captured and defeated by dying. He took hold of its gill so that with the right hand of his power he might separate the most wicked head from the deceived body, that is, he might remove the wickedness of the ancient enemy from those whom he had wrongly joined to himself and made almost one body with himself, and insert them into the body of his church as a kind Redeemer. For the fish has a gill at the boundary between its head and body. Just as our Lord is the head of his church, and the church is his body; so the devil is the head of all the wicked, and all the wicked are his body and members. Therefore, the Lord took hold of the gill of the huge fish, and drew it to himself, and cast it on dry land, because by breaking the power of the devil, he confidently led them openly and rescued from the power of darkness those whom he foreknew to be children of light.

When he had done this, the fish began to thrash about on dry land before his feet. When the Lord, having overcome the wickedness of the malignant enemy, brought it to light and made it manifest to all, the proud devil still endeavored to stir up persecution against His chosen ones, who are His feet; because through them the Lord walks on earth, who reigns above all in heaven.