Leviticus 14:19

And the priest shall offer the sin offering. — The other ewe lamb mentioned in Leviticus 14:10 the priest is now to offer as a sin offering, to expiate the sins which the restored leper had committed during his illness, having probably given vent to impatient and unbecoming expressions at his loathsome condition, not as due in consequence of having been in a state of uncleanness. The regulations in Leviticus 5:2, refer to cases when through thoughtlessness the unclean person forgot his duty.