NOTES for Lev 15:1-33
At first glance we again encounter hygienic prescriptions aimed at preventing epidemics in the camp of the Israelites; after all, if any human organs suddenly begin to function improperly, this may indicate a dangerous illness that threatens more than that person alone.
On the other hand, understanding sickness as ritual impurity says that every sickness is inwardly and ontologically connected with sin, with moral impurity. Of course, this does not mean that sickness is the direct consequence of some personal sin of the individual: it may not have been directly deserved. Yet by this Scripture clearly testifies that the Creator, who has no part in sin or defilement, cannot be responsible for human sickness or suffering. He can only heal and forgive the person, and the sacrifice offered to God here serves as an image of that.