Левит 14:15

The former chapter directed the priests how to convict a leper of ceremonial uncleanness. No prescriptions are given for his cure; but, when God had cured him, the priests are in this chapter directed how to cleanse him. The remedy here is only adapted to the ceremonial part of his disease; but the authority Christ gave to his ministers was to cure the lepers, and so to cleanse them. We have here, I. The solemn declaration of the leper's being clean, with the significant ceremony attending it (Lev 14:1-9). II. The sacrifices which he was to offer to God eight days after (v. 10-32). III. The management of a house in which appeared signs of a leprosy (v. 33-53). And the conclusion and summary of this whole matter (Lev 14:54, etc.).

14:15-17 In the ancient world, olive oil was commonly used to aid healing (see Isa 1:6; Luke 10:34). Its use here might symbolize the healing and cleansing of the infection, which allowed the person to return to the community. Perhaps it also represented restored union between God, the priest, and the worshiper.