PURPORT

Brahma's impulse for creation arises solely from his previous impressions. All jivas get their nature conformably to their impressions of previous births and accordingly their activity can have a beginning. It is called "the unseen" or the result of one's previous deeds. His natural impulse is formed according to the nature of the deeds done by him in the previous kalpa. Some of the eligible jivas also attain to the office of Brahma in this way.