While they were at Hazeroth, Miriam and Aaron criticized Moses because he had married a Cushite woman.
They said, "Has the LORD spoken only through Moses? Hasn't he spoken through us, too?" But the LORD heard them.
Now Moses was more humble than any other person on earth.
So immediately the LORD called to Moses, Aaron, and Miriam and said, "Go out to the Tabernacle, all three of you!" And the three of them went out.
References for Numbers 12:4
Then the LORD descended in the pillar of cloud and stood at the entrance of the Tabernacle. "Aaron and Miriam!" he called, and they stepped forward.
References for Numbers 12:5
And the LORD said to them, "Now listen to me! Even with prophets, I the LORD communicate by visions and dreams.