Numbers 5:1-4

1And Jehovah spoke to Moses, saying,

2Command the children of Israel, that they put out of the camp every leper, and every one that hath an issue, and whosoever is defiled by a dead person:

3both male and female shall ye put out; outside the camp shall ye put them, that they defile not their camps, in the midst whereof I dwell.

4And the children of Israel did so, and put them outside the camp: as Jehovah had said to Moses, so did the children of Israel.