"The book of Exodus tells us about the life of Miriam. We don't know too much about Miriam, but we do know she was a prophetess and one of the leaders of Israel alongside her brother Aaron (they both led under the authority of Moses). She was also a worshiper. In Exodus 15:20-21, after God had parted the Red Sea and the Israelites had escaped the Egyptians, it says, 'Then Miriam the prophetess, Aaron's sister, took a tambourine in her hand, and all the women followed her, with tambourines and dancing. Miriam sang to them: 'Sing to the Lord, for he is highly exalted. The horse and its rider he has hurled into the sea.'"
--Rise Up and Sing by Lex Buckley