In the Brahma realm, the first being had longer and more powerful features than the latter coming beings. So, a probability existed that the latter being died in the Brahma realm, and then was reborn as a human. This human abandoned worldly affairs and became an ascetic, then by his devotion and practice, achieved the power to remember his one past life. As he recalled it, he came to the conclusion that creatures, including himself, are not eternal, had limited age, were vulnerable to change, but that Brahma is eternal, ageless, and changeless.