The vizier ( or ) was the highest official in Ancient Egypt to serve the king, or pharaoh during the Old, Middle, and New Kingdoms. Vizier is the generally accepted rendering of ancient Egyptian tjati, tjaty etc., among Egyptologists. The Instruction of Rekhmire (Installation of the Vizier), a New Kingdom text, defines many of the duties of the tjaty, and lays down codes of behavior. The viziers were often appointed by the pharaoh, most from loyalty or talent.