GODS AND GODDESSES OF THE ANCIENT WORLD: Ma’at
MA’AT (pronounced may-et) is the ancient Egyptian goddess of truth, justice, harmony, and balance (a concept known as ma'at in Egyptian) who first appears during the period known as the Old Kingdom (c. 2613 - 2181 BCE) but no doubt existed in some form earlier.
She is depicted in anthropomorphic form as a winged woman, often in profile with an ostrich feather on her head, or simply as a white ostrich feather. The feather of Ma'at was an integral part of the Weighing of the Heart of the Soul ceremony in the afterlife where the heart of the soul of the dead person was weighed in the scales of justice against the feather.
Article by Joshua J. Mark on AHE