"They descend on different planets as messiahs"

In Satyaloka the inhabitants are fully cognizant of Vedic wisdom, and thus the mystic cloud of material energy is cleared. Therefore they are known as the Vedas personified. Such persons, being fully aware of knowledge both mundane and transcendental, have no interest in either the mundane or transcendental worlds. They are practically desireless devotees. In the mundane world they have nothing to achieve, and in the transcendental world they are full in themselves. Then why do they come to the mundane world? They descend on different planets as messiahs by the order of the Lord to deliver the fallen souls. On the earth they come down and do good to the people of the world in different circumstances under different climatic influences. They have nothing to do in this world save and except reclaim the fallen souls rotting in material existence, deluded by material energy

Śrīmad-Bhāgavatam1.19.23