PURPORT

Brahma is the director in charge of the modes of passion of material nature. Therefore it was natural for him to become angry on the refusal of his sons to obey his order. Although the Kumaras were right in such acts of refusal, Brahma, being absorbed in the mode of passion, could not check his passionate anger. He did not express it, however, because he knew that his sons were far enlightened in spiritual advancement and thus he should not express his anger before them.