In Greek mythology,

Themis is one of the twelve Titan children of Gaia and Uranus, and the second wife of Zeus. She is the personification of justice, divine order, fairness, law, and custom, and her symbols include the Scales of Justice. She is also associated with oracles and prophecies, including the Oracle of Delphi. Themis means "divine law" rather than human ordinance, literally "that which is put in place". To the ancient Greeks she was originally the organizer of the "communal affairs of humans, particularly assemblies". A gift of the gods, untranslatable and a mark of civilized existence, sometimes it means right custom, proper procedure, social order and sometimes the will of the gods with little of the idea of right. Some classical descriptions of Themis describe a blindfolded, sober-looking, woman holding scales. Themis is an earth goddess much like her mother, Gaia, and in some stories, it is hard to tell the two apart. Some classical depictions of Themis show her holding a sword.

Source Wikipedia