SB 11.31.10
brahma-rudradayas te tu
drstva yoga-gatim hareh
vismitas tam prasamsantah
svam svam lokam yayus tada
Translation:
A few of the demigods, however — notably Lord Brahma and Lord Siva — could ascertain how the Lord’s mystic power was working, and thus they became astonished. All the demigods praised the Lord’s mystic power and then returned to their own planets.
Purport:
Although the demigods are virtually omniscient within this universe, they could not understand the movements of Lord Krsna’s mystic potency. Thus they were astonished.