Luke 4:17

And when he had opened the book - Αναπτυξας, When he had unrolled it. The Sacred Writings used to this day, in all the Jewish synagogues, are written on skins of basil, parchment, or vellum, sewed end to end, and rolled on two rollers, beginning at each end; so that, in reading from right to left, they roll off with the left, while they roll on with the right. Probably the place in the Prophet Isaiah, here referred to, was the lesson for that day; and Jesus unrolled the manuscript till he came to the place: then, after having read, he rolled it up again, and returned it to the officer, Luke 4:20, the ruler of the synagogue, or his servant, whose business it was to take care of it. The place that he opened was probably the section for the day. See the table at the end of Deuteronomy, and the note at the end of that table.

There was delivered unto him - By the minister of the synagogue, or the keeper of the sacred books. They were kept in an "ark" or chest, not far from the pulpit, and the minister gave them to whomsoever he chose, to read them publicly.

The book - The volume contained the prophecy of Isaiah. It would seem, from this, that the books were kept separate, and not united into one as with us.

When he had opened the book - Literally, when he had "unrolled" the book. Books, among the ancients, were written on parchments or vellum that is, skins of beasts, and were "rolled" together on two rollers, beginning at each end, so that while reading they rolled off from one to the other. Different forms of books were indeed used, but this was the most common. When used the reader unrolled the manuscript as far as the place which he wished to find, and kept before him just so much as he would read. When the roller was done with, it was carefully deposited in a case.

The place where it was written - Isaiah 61:1-2.

4:17 He found - It seems, opening upon it, by the particular providence of God.