The priests have to distinguish between holy and common, clean and unclean. Israel is supposed to be holy and function as a clean nation not as an unclean nation.
The role of the priests expands, defining clean and unclean skin diseases for God’s people.
The rituals for being declared clean from skin diseases in Leviticus 14 point to the atoning sacrifice of the Messiah.
We all have to go through the human things. In Leviticus 15, the lists of discharges, natural and unnatural, point us to being holy in real, human life.
