The sun manifests his brilliance in a gem, although it is stone. Similarly, the original Personality of Godhead, Govinda, manifests His special power in a pious living entity. Thus the living entity becomes Brahma and manages the affairs of the universe

Expressions researched:
"the living entity becomes Brahma and manages the affairs of the universe"

CC Madhya-lila

The original Personality of Godhead, Govinda, manifests His special power in a pious living entity. Thus the living entity becomes Brahmā and manages the affairs of the universe.

CC Madhya 20.304, Translation and Purport:

“"The sun manifests his brilliance in a gem, although it is stone. Similarly, the original Personality of Godhead, Govinda, manifests His special power in a pious living entity. Thus the living entity becomes Brahmā and manages the affairs of the universe. Let me worship Govinda, the original Personality of Godhead."

This is a quotation from the Brahma-saṁhitā (5.49).