1. And the Lord spake unto Moses. A copious description is here given of what we have recently adverted to cursorily, as it were, i.e., the solemn atonement which was yearly made in the seventh month; for when Moses was instructing them as to what sacrifices were to be offered on each of the festivals, he expressly excepted, though only in a single word, this sacrifice, where he spoke of the day of atonement itself, on which they afflicted their souls. Now, therefore, a clear and distinct exposition of it is separately given. For although at other seasons of the year also both their public and private sins were expiated, and for this purpose availed the daily sacrifices, still this more solemn rite was meant to arouse the people’s minds, that they might more earnestly apply themselves all the year through to the diligent seeking for pardon and remission. In order, then, that they might be more anxious to propitiate God, one atonement was performed at the end of the year which might ratify all the others. But, that they might more diligently observe what is commanded, Moses makes mention of the time in which the Law was given, viz., when Nadab and Abihu were put to death by God, after they had rashly defiled the altar by their negligence.