Luke 10:3

(Orat. 2.) The sum of which is, that men ought to be so virtuous that the Gospel should make no less progress through their way of life than their preaching. (ubi sup.) The Lord gave them these commands also for the glory of the word, lest it should seem that enticements could more prevail over them. He wished them also not to be anxious to speak to others.

Now these animals are at variance among themselves, so that the one is devoured by the other, the lambs by the wolves; but the good Shepherd has no fear of wolves for His flock. And therefore the disciples are appointed not to make prey, but to impart grace. For the watchfulness of the good Shepherd causes the wolves to attempt nothing against the lambs; He sends them as lambs amid wolves that that prophecy might be fulfilled, The wolf and the lamb shall feed together. (Isaiah 65:25.) Or the heretics are compared to wolves. For wolves are beasts who lay in wait near the sheep folds, and prowl about the shepherds' cottages. They dare not enter the abodes of men, they pry out sleeping dogs, absent or slothful shepherds; they seize the sheep by the throat, that they may quickly strangle them; ravenous beasts, with bodies so stiff that they cannot easily turn themselves, but are carried along by their own impetus, and so are often deceived. If they are the first to see a man, it is said, they by a certain natural impulse, tear out his voice; but if a man first sees them, they quake with fear. In like manner the heretics lurk about Christ's sheep folds, howl near the cottages at night time. For night is the time for the treacherous who obscure the light of Christ with the mists of false interpretation. The inns of Christ, however, they dare not enter, and therefore are not healed, as he was in an inn who fell among thieves. They look out for the shepherds' absence, for they can not attack the sheep when the shepherds are by. Owing also to the inflexibility of a hard and obstinate mind, they seldom if ever turn from their error, while Christ the true interpreter of Scripture mocks them, so that they vent forth their violence in vain, and are not able to hurt; and if they overtake any one by the subtle trickery of their disputations, they make him dumb. For he is dumb who confesses not the word of God with the glory which belongs to it. Beware then lest the heretic deprive you of your voice, and lest you detect him not first. For he is creeping on while his treachery is disguised. But if you have discovered his unholy desires, you can not fear the loss of a holy voice. They attack the throat, they wound the vitals while they seek the soul. If also you hear any one called a priest, and you know his robberies, outwardly he is a sheep, inwardly a wolf, who is longing to gratify his rage with the insatiable cruelty of human murder.

(Hom. 33. in Matt.) For their comfort amid every danger was the power of Him who sent them. And therefore saith He, Behold, I send you; as if he said, This will suffice for your consolation, this will be enough to make you hope, instead of fearing the coming evils which He signifies, adding, as lambs among wolves. (Hom. 33 in Matt.) For this was a clear announcement of glorious triumph, that the disciples of Christ, when surrounded by their enemies as lambs among wolves, should still convert them.

Luke next relates, that the seventy disciples obtained for themselves from Christ apostolical learning, lowliness, innocency, justice, and to prefer no worldly things to holy preachings, but to aspire to such fortitude of mind as to be afraid of no terrors, not even death itself. He adds therefore, Go. Thus He had already commanded them to have no care for these persons, when He said, I send you as lambs among wolves.

(l. i. ep. 438.) Denoting the simplicity and innocence in His disciples. For those who were riotous, and by their enormities did despite to their nature, He calls not lambs, but goats.