Numbers 12:10-15

10But when the cloud had gone away from over the tent, Miriam's skin became white, like snow. She now had the bad disease called leprosy in her skin. Aaron looked at her and he saw that she had leprosy.

11Then Aaron said to Moses, ‘My master, please do not punish us because we have done this very silly thing. We have done a bad thing.

12But do not let Miriam be like a baby that is born dead, with a body that is only half there.’

13So Moses called loudly to the Lord, ‘Please God, make her well again!’

14But the Lord said to Moses, ‘Even if her father had spat on her face, she would have to be ashamed for seven days. So you must keep her outside the camp for seven days. After that you can let her come back inside the camp.’

15So Moses kept Miriam outside the camp for seven days. The people did not start to travel again until they had brought Miriam back into the camp again.