John Lightfoot on Matthew 25:27

[Thou oughtest therefore to have put my money to the exchangers, &c.] The lord did not deliver the talents to his servants with that intent, that they should receive the increase and profit of them by usury; but that, by merchandise and some honest way of trade, they should increase them. He only returns this answer to the slothful servant, as fitted to what he had alleged; "You take me for a covetous, griping, and sordid man: why then did you not make use of a manner of gain agreeable to these qualities, namely, interest or usury (since you would not apply yourself to any honest traffic), that you might have returned me some increase of my money, rather than nothing at all?" So that our Lord, in these words, doth not so much approve of usury, as upbraid the folly and sloth of his servant.

Exchangers, answering to the word trapezita very usual among the Talmudists: "An exchanger (trapezita) sells money; and because a table is always before him, upon which he buys and sells, therefore he is called mensarius," one that stands at a table.

Of the same employment was the shopkeeper of whom is as frequent mention among them. He exercised the employment of a usurer in buying and changing of fruits, as the other in money: for in these two especially consisted usury: of which you may see, if you please, the tract Bava Mezia.