Numbers 12:1, 4, 9-10

Miriam and Aaron began to talk against Moses because of his Cushite wife (he had married a Cushite).

So the LORD suddenly spoke to Moses, Aaron, and Miriam and said, “All three of you come to the Meeting Tent.” So they went.

The LORD was very angry with them, and he left. When the cloud lifted from the Tent and Aaron turned toward Miriam, she was as white as snow; she had a skin disease.