In Numbers 12, Miriam and Aaron criticized Moses for marrying an Ehiopian woman. How did God respond?

He gave Miriam leprosy.

And Miriam and Aaron spake against Moses because of the Ethiopian woman whom he had married: for he had married an Ethiopian woman.

And they said, Hath the LORD indeed spoken only by Moses? hath he not spoken also by us? And the LORD heard it.

...

And the anger of the LORD was kindled against them; and he departed.

And the cloud departed from off the tabernacle; and, behold, Miriam became leprous, white as snow: and Aaron looked upon Miriam, and, behold, she was leprous.

Numbers 12:1-10