By the fish we may understand the word concerning Christ, by the serpent the Devil himself. Or by the loaf may be understood spiritual doctrine; by the stone ignorance; by the fish the water of Holy Baptism; by the serpent the wiles of the Devil, or unbelief. Rabanus Maurus: Or; bread which is the common food signifies charity, without which the other virtues are of no avail. The fish signifies faith, which is born of the water of baptism, is tossed in the midst of the waves of this life and yet lives. Luke adds a third thing, an egg, (Luke 11:12.) which signifies hope; for an egg is the hope of the animal. To charity, He opposes a stone, that is, the hardness of hatred; to faith, a serpent, that is, the venom of treachery; to hope, a scorpion, that is, despair, which stings backward, as the scorpion. Saint Remigius: The sense therefore is; we need not fear that should we ask of God our Father bread, that is doctrine or love, He will give us a stone; that is, that He will suffer our heart to be contracted either by the frost of hatred or by hardness of soul; or that when we ask for faith, He will suffer us to die of the poison of unbelief. Thence it follows, If then ye being evil. References Sources France, R.T. The Gospel According to Matthew: an Introduction and Commentary. Leicester: Inter-Varsity, 1985. 07:10 Snakes in religion Fish in Christianity Animals in the Bible Metaphors referring to fish Metaphors referring to snakes