The Egyptian goddess that represents truth, justice, and cosmic order is Maat. Often depicted with an ostrich feather, she embodies the principles of balance and harmony in the universe. Maat is integral to the concept of ma'at, which governs both the behavior of gods and humans. In the afterlife, the heart of the deceased is weighed against her feather to determine their righteousness. This highlights the importance of morality and truth in Egyptian culture, emphasizing the critical role of Maat in maintaining cosmic order and justice.