Luke 9:50

Now John is not blamed, because he did this from love, but he is taught to know the difference between the strong and the weak. And therefore our Lord though He rewards the stronger, yet does not exclude the weak; as it follows, And Jesus said unto him, Forbid him not, for he that is not against you is for you. True, O Lord. For both Joseph and Nicodemus, through fear Thy secret disciples, when the time came, did not refuse their offices. But still since Thou saidst elsewhere, He that is not with me is against me, and he that gathereth not with me scattereth, (Luke 11:23.) explain unto us lest the two seem contrary to one another. And it seems to me, if any one considers the Searcher of hearts, he cannot doubt that every man's action is distinguished by the motive of his heart. Now why does He in this place say that they are not to be hindered, who by the imposition of hands can subdue the unclean spirits, when according to Matthew, He says to these, I never knew you? (Matt. 7:23.) But we ought to perceive that there is no difference of opinion, but that the decision is this, that not only the official works but works of virtue are required in a priest, and that the name of Christ is so great, that even to the unholy it serves to give defence, but not grace. Let no one then claim to himself the grace of cleansing a man, because in him the power of the eternal Name has worked. For not by thy merits, but by his own hatred, the devil is conquered.

Therefore in heretics and false catholics, it becomes us to abhor, and forbid not the common sacraments in which they are with us, and not against us, but the divisions contrary to peace and truth, wherein they are against us as following not the Lord.

Marvel then at the power of Christ, how His grace works by means of the unworthy and those who are not His disciples: as also men are sanctified through the priests, although the priests be not holy.

But we ought to consider not so much the worker of the miracles, as the grace which was in him, who, by the power of Christ, performed miracles. But what if there should be both those which be numbered together with the Apostles, and those who are crowned with the grace of Christ; there are many diversities in Christ's gifts. But because the Saviour had given the Apostles power to cast out evil spirits, (Matt. 10:8.) they thought no one else but themselves alone was permitted to have this privilege granted to him, and therefore they come to enquire if it were lawful for others also to do this. As if He said, On the side of you who love Christ, are all they who wish to follow those things which conduce to His glory, being crowned with His grace.