The three who became impure[1]
צו את-בני ישראל וישלחו מן-המחנה כל-צרוע וכל-זב וכל טמא לנפש
Command the Jewish people to send out of the camp anyone with tzara’as, anyone who had an unusual emission, and anyone who is spiritually impure due to contact with the deceased[2]
After the Torah describes the three different camps, the camp of the Shechinah, the Divine Presence, the camp of the Leviim, and the camp of the rest of the Jews, it immediately relates the inherent holiness present in these camps. These camps are concentric circles, with the camp of the Divine Presence containing the highest level of sanctity, and the camp of the Jews having the lowest level. Someone with tza’ras, a leprous-like spiritual malady with physical symptoms, would be sent out of all three camps. Someone known as a zav, who suffered an unusual emission from their body, would be sent out of the inner two camps. Someone who is tamei mes, spiritually impure due to contact with the deceased, is only sent out of the innermost camp.