And Miriam and Aaron spake against Moses, they also became infected with the virus of discontent, because of the Ethiopian woman whom he had married; for he had married an Ethiopian woman, a Cushite, his first wife, Zipporah, apparently having died in the wilderness. Marriage with an Egyptian woman was not forbidden, but Miriam, and under her leadership Aaron also, took this opportunity of registering their jealousy of their brother's position among the people of the Lord, since the prestige of Moses had been established more firmly than ever by reason of the recent happenings.
Related Commentaries of Numbers 12:1
Numbers 12:1
1 And Miriam and Aaron spake against Moses because of the Ethiopiana woman whom he had married: for he had married an Ethiopian woman.