Maat-the Netert of Cosmic Order, Balance, Truth and Justice. The hearts of the deceased were weighed against her feather in the Judgement Hall of Osiris.

The heart of a 'Truth Speaker' would weigh the same as the feather of Maat and he/she would then be permitted to enter the Kingdom of Osiris. The deceased whose heart was heavier than the feather of Maat was devoured by Ammut. Maat personifies a cosmological principle that permeated all life in Ancient Egypt. She signifies all order, law, harmony, equilibrium and justice. The Egyptian texts recognise her cosmic power as the source without which the other neteru are functionless.