There is a purpose for the exhibition of such a tendency by Brahma (the tendency to enjoy his own daughter), and he is not to be condemned like an ordinary living entity

Expressions researched:
"There is a purpose for the exhibition of such a tendency by Brahma, and he is not to be condemned like an ordinary living entity"

SB Canto 3

In the material world, Brahmā is the complete representation of the Supreme Personality of Godhead, and transcendental sound, praṇava, comes from him. He is therefore invested with multifarious energies, from which all the demigods like Indra, Candra and Varuṇa are manifested. His transcendental value is not to be minimized, even though he exhibited a tendency to enjoy his own daughter. There is a purpose for the exhibition of such a tendency by Brahmā, and he is not to be condemned like an ordinary living entity.

SB 3.12.48, Translation and Purport:

Brahmā is the personal representation of the Supreme Personality of Godhead as the source of transcendental sound and is therefore above the conception of manifested and unmanifested. Brahmā is the complete form of the Absolute Truth and is invested with multifarious energies.

The post of Brahmā is the highest responsible post within the universe, and it is offered to the most perfect personality of the universe. Sometimes the Supreme Personality of Godhead has to become Brahmā when there is no suitable living being to occupy the post. In the material world, Brahmā is the complete representation of the Supreme Personality of Godhead, and transcendental sound, praṇava, comes from him. He is therefore invested with multifarious energies, from which all the demigods like Indra, Candra and Varuṇa are manifested. His transcendental value is not to be minimized, even though he exhibited a tendency to enjoy his own daughter. There is a purpose for the exhibition of such a tendency by Brahmā, and he is not to be condemned like an ordinary living entity.