See Leviticus 1:14-16; Leviticus 12:8. In the larger offerings of the ox and the sheep, the fat which was burned upon the altar represented, like the burnt-offering, the dedication of the worshipper; in this case, the same meaning was conveyed by one of the birds being treated as a distinct burnt-offering.

Leviticus 5:7

A lamb - One of the flock, either a sheep or a goat.

For his trespass, which he hath committed - As his forfeit for the sin he hath committed.

If he be not able to bring a lamb - See the conclusion at Leviticus 1:16 (note).

And if he be not able to bring a lamb,.... He is not possessed of a lamb, nor able to purchase one:

then he shall bring for his trespass which he hath committed, two turtledoves, or two young pigeons, unto the Lord; either the one or the other; these were common, and in great plenty in the land of Israel, as Maimonides (y) observes, which was the reason of their being ordered, since to be had cheap. The turtledoves were larger, as the Targum of Jonathan calls them, being older, and the pigeons lesser, being young; or the one were grown, and not little, and the other little, and not grown, as the Jewish writers (z) observe; and either of them were proper emblems of Christ in his purity, innocence, and meekness, by whom an atonement is made both for the rich and poor:

one for a sin offering, and the other for a burnt offering; one of the turtle doves or pigeons, whichsoever were brought, was offered up as a sin offering, and the other that remained was offered up as a burnt offering; so that the poor man had two sorts of offerings out of what he brought, when the rich had but one; and may denote the completeness of his sacrifice, and the full atonement made by it.

(y) Moreh Nevochim, par. 3. c. 46. (z) Maimon & Bartenora in Misn. Cholin, c. 1. sect. 5.

"But if his hand does not reach what is sufficient for a sheep," i.e., if he could not afford enough to sacrifice a sheep ("his hand" is put for what his hand acquires), he was to bring two turtle-doves or two young pigeons, one for the sin-offering, the other for the burnt-offering. The pigeon intended for the sin, i.e., for the sin-offering, he was to bring first of all to the priest, who was to offer it in the following manner. The head was to be pinched off from opposite to its neck, i.e., in the nape just below the head, though without entirely severing it, that is to say, it was to be pinched off sufficiently to kill the bird and allow the blood to flow out. He was then to sprinkle of the blood upon the wall of the altar, which could be effected by swinging the bleeding pigeon, and to squeeze out the rest of the blood against the wall of the altar, because it was a sin-offering; for in the burnt-offering he let all the blood flow out against the wall of the altar (Leviticus 1:15). What more was done with the pigeon is not stated. Hence it cannot be decided with certainty, whether, after the crop and its contents were removed and thrown upon the ash-heap, the whole of the bird was burned upon the altar, or whether it fell to the priest, as the Mishnah affirms (Seb. vi. 4), so that none of it was placed upon the altar. One circumstance which seems to favour the statement in the Talmud is the fact, that in the sin-offering of pigeons, a second pigeon was to be offered as a burnt-offering, and, according to Leviticus 5:10, for the purpose of making an atonement; probably for no other purpose than to burn it upon the altar, as the dove of the sin-offering was not burned, and the sacrifice was incomplete without some offering upon the altar. In the case of sin-offerings of quadrupeds, the fat portions were laid upon the altar, and the flesh could be eaten by the priest by virtue of his office; but in that of pigeons, it was not possible to separate fat portions from the flesh for the purpose of burning upon the altar by themselves, and it would not do to divide the bird in half, and let one half be burned and the other eaten by the priest, as this would have associated the idea of halfness or incompleteness with the sacrifice. A second pigeon was therefore to be sacrificed as a burnt-offering, כּמּשׂפּט, according to the right laid down in Leviticus 1:14., that the priest might make atonement for the offerer on account of his sin, whereas in the sin-offering of a quadruped one sacrificial animal was sufficient to complete the expiation.

(Note: From the instructions to offer two pigeons in order to obtain expiation, it is perfectly evident that the eating of the flesh of the sin-offering on the part of the priest formed an essential part of the act of expiation, and was not merely a kind of honourable tribute, which God awarded to His servants who officiated at the sacrifice.)

And if he be not able to bring a lamb, then he shall bring for his trespass, which he hath committed, two turtledoves, or two young pigeons, unto the LORD; one for a sin offering, and the other for a burnt offering.

5:7 Not able - Through poverty. And this exception was allowed also in other sin - offerings. For a sin - offering - Which was for that particular sin, and therefore offered first: before the burnt - offering, which was for sins in general; to teach us not to rest in general confessions and repentance, but distinctly and particularly, as far as we can, to search out, and confess, and loath, and leave our particular sins, without which God will not accept our other religious services.

he be...: Heb. his hand cannot reach to the sufficiency of a lamb

5:1-13 The offences here noticed are, 1. A man's concealing the truth, when he was sworn as a witness to speak the truth, the whole truth, and nothing but the truth. If, in such a case, for fear of offending one that has been his friend, or may be his enemy, a man refuses to give evidence, or gives it but in part, he shall bear his iniquity. And that is a heavy burden, which, if some course be not taken to get it removed, will sink a man to hell. Let all that are called at any time to be witnesses, think of this law, and be free and open in their evidence, and take heed of prevaricating. An oath of the Lord is a sacred thing, not to be trifled with. 2. A man's touching any thing that was ceremonially unclean. Though his touching the unclean thing only made him ceremonially defiled, yet neglecting to wash himself according to the law, was either carelessness or contempt, and contracted moral guilt. As soon as God, by his Spirit, convinces our consciences of any sin or duty, we must follow the conviction, as not ashamed to own our former mistake. 3. Rash swearing, that a man will do or not do such a thing. As if the performance of his oath afterward prove unlawful, or what cannot be done. Wisdom and watchfulness beforehand would prevent these difficulties. In these cases the offender must confess his sin, and bring his offering; but the offering was not accepted, unless accompanied with confession and humble prayer for pardon. The confession must be particular; that he hath sinned in that thing. Deceit lies in generals; many will own they have sinned, for that all must own; but their sins in any one particular they are unwilling to allow. The way to be assured of pardon, and armed against sin for the future, is to confess the exact truth. If any were very poor, they might bring some flour, and that should be accepted. Thus the expense of the sin-offering was brought lower than any other, to teach that no man's poverty shall ever bar the way of his pardon. If the sinner brought two doves, one was to be offered for a sin-offering, and the other for a burnt-offering. We must first see that our peace be made with God, and then we may expect that our services for his glory will be accepted by him. To show the loathsomeness of sin, the flour, when offered, must not be made grateful to the taste by oil, or to the smell by frankincense. God, by these sacrifices, spoke comfort to those who had offended, that they might not despair, nor pine away in their sins. Likewise caution not to offend any more, remembering how expensive and troublesome it was to make atonement.