When devas and brahmas came to know of the news of the coming of the Buddha, they went to the palace of the future Buddha, the deva Setaketu, and said, “Please go to the human world to become a Buddha.” Setaketu considered whether the time was appropriate for him to become a Buddha, and then gave a promise to the devas and brahmas. “All right, I will descend to the human world,” he said.
Concepts and terminology:
Deva (De-va) : Celestial beings that are more powerful and live longer than human beings. They have angelic forms and possess maigical powers. They are not gods, and are neither omniscient, omnipotent, nor morally perfect. Link: Wikipedia
Brahma (Brah-mah) : A race of extremely powerful dieties. They are a higher form of deva.