Matthew Poole and continuators on Leviticus 23:19

19 Then ye shall sacrifice one kid of the goats for a sin-offering , and two lambs of the first year for a sacrifice of peace-offerings.

In Levit. 4. 14. the sin-offering for the sin of the people is a bullock, but here a kid, &c. the reason of the difference may be this, because that was for some particular sin of the people, but this onely in general for all their sins. If it be said, then this should have been the better sacrifice, as being for far more and possibly greater offences, it may be replyed, that this is not the onely instance wherein the greater sins are expiated by smaller sacrifices, and the smaller sins by greater sacrifices, which was to instruct us, that sins were not expiated by the sacrifices for any worth in them, but onely in respect of Christ, and that, though all sins are not equal, yet they are all expiated by one and the same price, even by the blood of Christ.

In Levit. 4. 14. the sin-offering for the sin of the people is a bullock, but here a kid, &c. the reason of the difference may be this, because that was for some particular sin of the people, but this onely in general for all their sins. If it be said, then this should have been the better sacrifice, as being for far more and possibly greater offences, it may be replyed, that this is not the onely instance wherein the greater sins are expiated by smaller sacrifices, and the smaller sins by greater sacrifices, which was to instruct us, that sins were not expiated by the sacrifices for any worth in them, but onely in respect of Christ, and that, though all sins are not equal, yet they are all expiated by one and the same price, even by the blood of Christ.

Marginal references: chap. 4. 23. 28.; chap. 3. 1.