Mithra, Yima, and Jamshid belong to the Iranian imagination of light, kingship, covenant, and world-order.
Mithra is the power of covenant, oath, solar witnessing, and the binding force of truth between beings. In later Roman Mithraism, he becomes the central figure of a mystery cult of initiation, cosmic struggle, and ascent through the planetary spheres.
Yima, later Jamshid in Persian tradition, is the radiant primordial king. He rules over a golden age, expands the world, preserves life, and in some traditions prepares an enclosure or hidden refuge against a coming catastrophe. He is a royal figure of preservation, splendor, and loss.
Together they represent two essential Iranian themes: the light that binds truth, and the king who guards life through the cycles of time.
In the Western Mystery Tradition, this current enters through Zoroastrianism, the Persian Magi, Mithraic initiation, angelology, eschatology, and the long struggle between light and darkness.
Within the Royal Art, Mithra and Yima belong to the solar-royal stream: covenant, oath, kingly preservation, initiatory brotherhood, and the battle for truth against the forces of dissolution.