Come out ye three... — There is nothing in these words which implies that Miriam entered into the Tabernacle itself. Moses, Aaron, and Miriam were summoned to go out of the camp (comp. Numbers 11:30), and to come to the entrance of the Tabernacle, or rather of the court, inasmuch as the command to come as far as the entrance into the Sanctuary appears to have been given afterwards (Numbers 12:5). It must be remembered that there was but one court at this time.
Related Commentaries of Numbers 12:4
Numbers 12:4
4 And the LORD spake suddenly unto Moses, and unto Aaron, and unto Miriam, Come out ye three unto the tabernacle of the congregation. And they three came out.