Luke 19:46

For God wishes not His temple to be a house of traffic, but the dwelling-place of holiness, nor does He fix the priestly service in a saleable performance of religion, but in a free and willing obedience.

(Hom. 39. in Ev.) And these make the house of God a den of thieves, because when corrupt men hold religious offices, they slay with the sword of their wickedness their neighbours, whom they ought to raise to life by the intercession of their prayers. The temple also is the soul of the faithful, which if it put forth corrupt thoughts to the injury of a neighbour, then is it become as it were a lurking place of thieves. But when the soul of the faithful is wisely instructed to shun evil, truth teaches daily in the temple.

(de Qu. Ev. lib. ii. qu. 48.) Now mystically, you must understand by the temple Christ Himself, as man in His human nature, or with His body united to Him, that is, the Church. But inasmuch as He is the Head of the Church, it was said, Destroy this temple, and I will raise it up in three days. (John 2:19.) Inasmuch as the Church is joined to Him, is the temple so interpreted, of which He seems to have spoken in the same place, Take these away from hence; signifying that there would be those in the Church who would rather be pursuing their own interest, or find a shelter therein to conceal their wickedness, than follow after the love of Christ, and by confession of their sins receiving pardon be restored.

Now there were in the temple a number of sellers who sold animals, by the custom of the law, for the sacrificial victims, but the time was now come for the shadows to pass away, and the truth of Christ to shine forth. Therefore Christ, who together with the Father was worshipped in the temple, commanded the customs of the law to be reformed, but the temple to become a house of prayer; as it is added, My house, &c.