The word mayamaya is very significant in this verse. Maya means mercy, specific knowledge and also illusion. Therefore Lord Boar is everything; He is merciful, He is all knowledge, and He is illusion also. The sound which He vibrated as the boar incarnation was answered by the Vedic hymns of the great sages in the planets Janaloka, Tapoloka and Satyaloka. The highest intellectual and pious living entities live in those planets, and when they heard the extraordinary voice of the boar, they could understand that the specific sound was vibrated by the Lord and no one else. Therefore they replied by praying to the Lord with Vedic hymns. The earth planet was submerged in the mire, but on hearing the sound of the Lord, the inhabitants of the higher planets were all jubilant because they knew that the Lord was there to deliver the earth. Therefore Brahma and all the sages, such as Bhrgu, Brahmas other sons, and learned brahmanas, were enlivened, and they concertedly joined in praising the Lord with the transcendental vibrations of the Vedic hymns. The most important is the Brhan-naradiya Purana verse Hare Krsna, Hare Krsna, Krsna Krsna, Hare Hare/ Hare Rama, Hare Rama, Rama Rama, Hare Hare.