The appearance of the wonderful and gigantic incarnation of Visnu as the mountainlike boar did not fill them (Brahma and the other enlightened brahmanas) with any kind of fear

Expressions researched:
"The appearance of the wonderful and gigantic incarnation of Viṣṇu as the mountainlike boar did not fill them with any kind of fear"

Srimad-Bhagavatam

SB Canto 3

Brahmā and other enlightened brāhmaṇas who know the Supreme Personality of Godhead are enlivened by the appearance of the Lord in any of His multi-incarnations. The appearance of the wonderful and gigantic incarnation of Viṣṇu as the mountainlike boar did not fill them with any kind of fear, although the Lord's resounding voice was tumultuous and echoed horribly in all directions as an open threat to all demons who might challenge His omnipotency.

SB 3.13.24, Translation and Purport

When the great sages and thinkers who are residents of Janaloka, Tapoloka and Satyaloka heard the tumultuous voice of Lord Boar, which was the all-auspicious sound of the all-merciful Lord, they chanted auspicious chants from the three Vedas.

Brahmā and other enlightened brāhmaṇas who know the Supreme Personality of Godhead are enlivened by the appearance of the Lord in any of His multi-incarnations. The appearance of the wonderful and gigantic incarnation of Viṣṇu as the mountainlike boar did not fill them with any kind of fear, although the Lord's resounding voice was tumultuous and echoed horribly in all directions as an open threat to all demons who might challenge His omnipotency.