Matthew 21:24

But if the Lord come seeking fruit with temptations, and one be found having nought of righteousness but only a profession of faith, which is leaves without fruit, he is soon withered, losing even his seeming faith; and every disciple makes this fig tree to wither, by making it be seen that he is void of Christ, as Peter said to Simon, Thy heart is not right in the sight of God (Acts 8:21.) For it is better that a deceitful fig tree which is thought to be alive, yet brings forth no fruit, should be withered up at the word of Christ's disciples, than that by an imposture it should steal aawy innocent hearts. Also there is in every unbeliever a mountain great in proportion to his unbelief, which is removed by the words of Christ's disciples. But some one will say in opposition to this, that it was absurd to ask by what authority Jesus did these things. For that it could not be that He would answer, that He did these by the Devil's authority; and He would not tell them as it truly was, that He did them by His own power. If it should be said, that the rulers put this question to Him in order to deter Him from His proceedings; as when we say to one who is dealing with what is ours in a way which we do not like, we say to him, Who bade thee do this? meaning to deter him from what he is so doing;—if it is to be taken so, what means Christ's answer, Do you tell Me this, and I will tell you by what authority I do these things. Perhaps therefore, the place should be understood as follows. There are in the general two opposite powers, one on the side of God, the other on the side of the Devil; but of particular powers there are many; for it was not one and the same power that wrought in all the Prophets to enable them to do miracles, but one in these, another in those; and, it may be, for lesser things a lesser power, for greater things a greater power. […]

Not that they should answer it, and thereupon hear of Christ the answer to their question, but that being puzzled they should ask Him no farther; according to that precept He had given above, Give not that which is holy to the dogs. (Mat. 7:6.) For even if He had told them, it would have profited nothing, because the darkened will cannot perceive the things that are of the light. For him that enquires we ought to instruct, but him that tempts, to overthrow by a stroke of reasoning, but not to publish to him the power of the mystery. The Lord thus sets before them in His question a dilemma; and that they might not escape Him, says, Which if ye tell me, I in like wise will tell you by what authority I do these things. His question is this; The baptism of John whence was it? from heaven, or of men?

The Lord could have confuted the calumny of His tempters by a simple answer, but He put a question to them of such skilful contrivance, that they must be condemned either by their silence or their knowledge; Jesus answered and said unto them, I also will ask you one question.

According to Chrysostom, when someone asks in order to learn, then the truth should be answered to him; but when he asks in order to test, then he must be reproved and confuted. So the Lord, because he knew they were testing him, said: "I …

Full of spite that He had expelled the peddlers from the temple, the teachers of the law approached and asked Him such things as these: "Who are you to cast out from the temple those who do business there? As a priest do you do …