Vayikra 14:19

19 And the kohen shall offer the chattat (sin offering), and make kapporah for him that is to be made tahor from his tumah (uncleanness); and afterward he shall slaughter (shachat) the olah (burnt offering);

Vayikra 14:19 Meaning and Commentary

Leviticus 14:19

And the priest shall offer the sin offering
This was the ewe lamb, according to the rite of every sin offering, as Aben Ezra says; and was typical of Christ, as all such offerings were, who was made sin and a sin offering for his people: and make an atonement for him that was to be cleansed from his
uncleanness;
for it seems the atonement was not perfected by the trespass offering and all the preceding rites; but a sin offering was necessary both on account of moral uncleanness, the cause of the leprosy, and of ceremonial uncleanness by it: and afterward he shall kill the burnt offering;
the other he lamb; the burnt offering for the most part following the sin or trespass offering as a gift by way of thankfulness, atonement being made for sin by the other offerings; which also was typical of Christ, as all burnt offerings were.

Vayikra 14:19 In-Context

17 And of the rest of the shemen that is in his hand shall the kohen put upon the lobe of the right ear of him that is to be made tahor, and upon the thumb of his right hand, and upon the bohen of his right foot, upon the dahm of the asham (trespass offering);

18 And the remnant of the shemen that is in the kohen’s hand he shall pour upon the head of him that is to be made tahor; and the kohen shall make kapporah for him before Hashem.

19 And the kohen shall offer the chattat (sin offering), and make kapporah for him that is to be made tahor from his tumah (uncleanness); and afterward he shall slaughter (shachat) the olah (burnt offering);

20 And the kohen shall offer the olah (burnt offering) and the minchah upon the Mizbe’ach; and the kohen shall make kapporah for him, and he shall be tahor.

21 And if he be poor, and cannot afford otherwise, then he shall take one keves for an asham (trespass offering) to be waved, to make kapporah for him, and one tenth of an ephah of fine flour mixed with shemen for a minchah, and a log of shemen;