*Minor differences ignored. Grouped by changes, with first version listed as example.
After Moses had treated of the offerings and other sacrifices, which were testimonies of gratitude and exercises of piety, he now descends to the sin-offering (expiationem) which held the chief place amongst the sacrifices, inasmuch as, without reconciliation, there could never be any intercourse between men and God; for since He deservedly abominates the whole human race on account of the corruption of our nature, and because we all continually provoke His wrath, the whole hope of salvation must needs be founded on the remedies provided for propitiating Him. This principle, being established, we must remember that Moses will henceforth speak of the expiatory sacrifices which propitiate God to men by the removal of their guilt. He here shews how God is to be appeased, where a man shall have sinned through ignorance or inconsiderateness; wherein too a distinction is laid down between different persons, since one kind of victim is required of a king, another of the priests, and another of ordinary persons; whilst regard is had to the poor, that they may not be burdened by so great an expense as the rich. But, since it will appear from the context that all kinds of ignorance are not here included, we must see what the word sggh, shegagah, [1] means, which I have preferred rendering error rather than ignorance; for Moses does not refer to those transgressions into which we are ensnared, when we are led astray by the appearance of rectitude, so as to think ourselves without blame; but to those of which we take no heed, and whereby our minds are not pricked; or to those sudden falls, wherein the infirmity of the flesh so stifles the reason and the judgment as to blind the sinner. It is of such that Paul speaks when he bids us "restore in the spirit of meekness those who are overtaken in a fault," (Galatians 6:1;) for he does not mean those who are deceived by their good intentions (as they call it,) or rather by their foolish opinion, so as to be unconscious of their sin; but those who fall through the infirmity of their flesh, and whom Satan catches unawares in his snares; or who, at any rate, do not perceive the evil they have done, so as immediately to apply the remedy. This will be more clearly understood from Psalm 19:12, 13, where David, having asked pardon for his errors, seeks to be kept free from presumptuous sins. The antithesis between sgy'vt, shegioth, [2] and zdym, zedim, shews that those transgressions are called errors, in which there is no criminal pride against God. "If a soul shall sin -- from all the commandments," [3] is a harsh expression; and therefore some refer it to sins of omission, but I interpret it more simply, "If he sin by turning away from the commandments," or "if he commit any thing opposed (alienum)to the commandments."
1 - S.M. says the word means, "a sin into which the perplexed mind has been driven under the impulse of some passion, through thoughtlessness, imprudence, or error, when inattentive to the dictates of reason and of the Spirit." -- W.
2 - Lexicographers make no distinction between the approximate roots sgg and sgh. Hence sgy'vt, is regarded as meaning the same as the word used in Leviticus 4:2. By zdym, are understood sins committed with a high hand and rebellious spirit. -- W.
3 - A. V., "against any of the commandments." Ainsworth's version is, "A soule, when it shall sin through ignorance of all the commandments," etc.; and his Gloss. "of all, understand, by doing any one of all the commandments. So Moses himself explaineth it in the words here following, and in ver. 13, 22, 27."
And the Lord spake Israel - This formula is the commencement of a distinct section of the Law.
And the Lord spake unto Moses, saying. Continued to speak to him, or, after some pause made, proceeded to speak to him, and give things in commandment concerning the sin offering, what it should be, and for whom, as follows.
Burnt-offerings, meat-offerings, and peace-offerings, had been offered before the giving of the law upon mount Sinai; and in these the patriarchs had respect to sin, to make atonement for it. But the Jews were now put into a way of making atonement for sin, more particularly by sacrifice, as a shadow of good things to come; yet the substance is Christ, and that one offering of himself, by which he put away sin. The sins for which the sin-offerings were appointed are supposed to be open acts. They are supposed to be sins of commission, things which ought not to have been done. Omissions are sins, and must come into judgment: yet what had been omitted at one time, might be done at another; but a sin committed was past recall. They are supposed to be sins committed through ignorance. The law begins with the case of the anointed priest. It is evident that God never had any infallible priest in his church upon earth, when even the high priest was liable to fall into sins of ignorance. All pretensions to act without error are sure marks of Antichrist. The beast was to be carried without the camp, and there burned to ashes. This was a sign of the duty of repentance, which is the putting away sin as a detestable thing, which our soul hates. The sin-offering is called sin. What they did to that, we must do to our sins; the body of sin must be destroyed, Romans 6:6. The apostle applies the carrying this sacrifice without the camp to Christ, Hebrews 13:11-13.
The Expiatory Sacrifices. - The sacrifices treated of in ch. 1-3 are introduced by their names, as though already known, for the purpose of giving them a legal sanction. But in ch. 4 and 5 sacrifices are appointed for different offences, which receive their names for the first time from the objects to which they apply, i.e., from the sin, or the trespass, or debt to be expiated by them: viz., חטּאת sin, i.e., sin-offering (Leviticus 4:3, Leviticus 4:8, Leviticus 4:14, Leviticus 4:19, etc.), and אשׁם debt, i.e., debt-offering (Leviticus 5:15-16, Leviticus 5:19); - a clear proof that the sin and debt-offerings were introduced at the same time as the Mosaic law. The laws which follow are distinguished from the preceding ones by the new introductory formula in Leviticus 4:1-2, which is repeated in Leviticus 5:14. This repetition proves that Leviticus 4:2-5:13 treats of the sin-offerings, and Leviticus 5:14-19 of the trespass-offerings; and this is confirmed by the substance of the two series of laws.
The Lord spake unto Moses - The laws contained in the three first chapters, seem to have been delivered to Moses at one time. Here begin the laws of another day, which God delivered from between the Cherubim.
*More commentary available at chapter level.