to teach when it is unclean, and when it is clean: this is the law of leprosy.

To make clear when it is unclean and when it is clean: this is the law about the disease of the leper.

δια να γινηται γνωστον ποτε ειναι τι ακαθαρτον και ποτε καθαρον· ουτος ειναι ο νομος περι της λεπρας.

To teach when it is unclean, and when it is clean: this is the law of leprosy.