John Lightfoot on Matthew 13:52

[Bringeth forth out of his treasury things new and old.] These words are spoken according to the dialect of the schools, where the question was not seldom started, What wine, what corn, or fruits were to be used in the holy things, and in some rites, new or more old; namely, of the present year, or the years past. But now, a thrifty man, provident of his own affairs, was stored both with the one and the other, prepared for either, which should be required. So it becomes a scribe of the gospel to have all things in readiness, to bring forth according to the condition and nature of the thing, of the place, and of the hearers. "Do ye understand all these things (saith Christ), both the things which I have said, and why I have said them? So a scribe of the gospel ought to bring forth," &c.