'Sister' in the Bible

He is not to defile himself for his father or mother, or his brother or sister, when they die, because the hair consecrated to his God is on his head.

For they attacked you with the treachery that they used against you in the Peor incident. They did the same in the case involving their sister Cozbi, daughter of the Midianite leader who was killed the day the plague came at Peor.”

The name of Amram’s wife was Jochebed, a descendant of Levi, born to Levi in Egypt. She bore to Amram: Aaron, Moses, and their sister Miriam.