1. Here is one in the beginning of the year, which seems to be altogether new, and not instituted by the law of Moses; it is the annual solemnity of cleansing the sanctuary. (1.) On the first day of the first month (upon new-year's day) they were to offer a sacrifice for the cleansing of the sanctuary (v. 18), that is, to make atonement for the iniquity of the holy things the year past, that they might bring none of the guilt of them into the services of the new year, and to implore grace for the preventing of that iniquity, and for the better performance of the service of the sanctuary the ensuing year. And, in token of this, the blood of this sin-offering was to be put upon the posts of the gate of the inner court (v. 19), to signify that by it atonement was intended to be made for the sins of all the servants that attended that house, priests, Levites, and people, even the sins that were found in all their services. Note, Even sanctuaries on earth need cleansing, frequent cleansing; that above needs none. Those what worship God together should often join in renewing their repentance for their manifold defects, and applying the blood of Christ for the pardon of them, and in renewing their covenants to be more careful for the future; and it is very seasonable to begin the year with this work, as Hezekiah did when it had been long neglected, 2 Chron. xxix. 17. They were here appointed to cleanse the sanctuary upon the first day of the month, because on the fourteenth day of the month they were to eat the passover, an ordinance which, of all Old-Testament institutions, had most in it of Christ and gospel grace, and therefore it was very fit that they should begin to prepare for it a fortnight before by cleansing the sanctuary. (2.) This sacrifice was to be repeated on the seventh day of the first month, v. 20. And then it was intended to make atonement for every one that errs, and for him that is simple. Note, He that sins errs and is simple; he mistakes, he goes out of the way, and shows himself to be foolish and unwise. But here it is spoken of those sins which are committed through ignorance, mistake, or inadvertency, whether by any of the priests, or of the Levites, or of the people. Sacrifices were appointed to atone for such sins as men were surprised into, or did before they were aware, which they would not have done if they had known and remembered aright, which they were overtaken in, and for which, afterwards, they condemn themselves. But for presumptuous sins, committed with a high hand, there was no sacrifice appointed, Num. xv. 30. By these repeated sacrifices you shall reconcile the house, that is, God will be reconciled to it, and continue the tokens of his presence in it, and will let it alone this year also.