After arriving at the place of combat, Brahma, the leader of thousands of sages and transcendentalists, saw the demon (Hiranyaksa), who had attained such unprecedented power that no one could fight with him

Expressions researched:
"After arriving at the place of combat, Brahma, the leader of thousands of sages and transcendentalists, saw the demon, who had attained such unprecedented power that no one could fight with him"

SB Canto 3

After arriving at the place of combat, Brahmā, the leader of thousands of sages and transcendentalists, saw the demon, who had attained such unprecedented power that no one could fight with him. Brahmā then addressed Nārāyaṇa, who was assuming the form of a boar for the first time.

SB 3.18.21, Translation:

After arriving at the place of combat, Brahmā, the leader of thousands of sages and transcendentalists, saw the demon, who had attained such unprecedented power that no one could fight with him. Brahmā then addressed Nārāyaṇa, who was assuming the form of a boar for the first time.