Leviticus 5:7

“And if he be not able to bring a lamb, etc.] 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 f118 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 f119 observe; and either of them were proper emblems of Christ in his purity,…”

“Special occasions are mentioned on which sin-offerings are to be made with a particular confession of the offence for which atonement is sought Leviticus 5:5. Leviticus 5:1 Swearing - Adjuration. The case appears to be that of one who has been put upon his oath as a witness by a magistrate, and fails to utter all he has seen and heard (compare the marginal references. and Proverbs 29:24; Numbers 5:21). Leviticus 5:2-3 Hid from him - Either through forgetfulness or indifference, so that purification had been neglected. In such a case there had been a guilty negligence, and a sin-offering was required. On the essential connection between impurity and the sin-offering, see Leviticus 12:1.…”

“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. Leviticus 5:9”

“5:7-13 The poor also needed to secure atonement and reconciliation. Birds (5:7) were permitted for those too poor to afford a lamb (cp. 1:14-17). Although an animal offering was typically required for atonement (17:11), God in his grace allowed the bloodless offering of flour if the worshiper could not even afford two birds (5:11). 5:7 The sin offerings included both a portion as a burnt offering and a portion that was first offered, then given to the priests (cp. 4:22-35; 6:24-30). Because of their small size, two birds were required—one for each type of offering.”

“he be not able to bring a lamb: Heb. his hand cannot reach to the sufficiency of a lamb, Lev 5:11, Lev 12:8, Lev 14:21; Co2 8:12; Jam 2:5, Jam 2:6 two turtledoves: Lev 1:14, Lev 1:15; Mat 3:16, Mat 10:16; Luk 2:24 one: Lev 5:8, Lev 5:9, Lev 9:3, Lev 14:22, Lev 14:31, Lev 15:14, Lev 15:15, Lev 15:30, Lev 16:5; Heb 10:6-10 Leviticus 5:8”