Kommentar zu Jeschijahu 66:23

מדי חדש Whenever new moon will be.⁴²A. V., From one new moon to another. Your daily tasks. מדי has nearly the same meaning as בכל עת whenever (Est. 5:13). Comp. מדי עברו whenever he passed (2 Kings 4:8).

חדש בחדשו a new moon on the day appointed for it. Comp. דבר יום ביומו the task of every day on the day appointed for it (Ex. 5:13). From this verse the ancients derived that the wicked had to suffer the future punishment for twelve months;^42aSee Midrash Yalkut ad locum. they explain the word מדי to signify one year.⁴³This seems to be I. E.’s interpretation of the passage quoted from the Midrash; but this explanation of מרי is not found there. The meaning of מדי שבת בשבתו I have explained in my commentary on the chapter concerning the seven weeks.^43aLev. 23:9-22, or ib. 25:1-13. The words מדי שבת בשבתו are explained in neither of the two passages. I. E. is perhaps of opinion that the expression שבת, used here by the prophet, includes also the festivals, and he refers therefore to his remark on Lev. 23:11, in which he proves that the word שבת in the phrase ממחרת השבת refers to the first day of Passover.