Bhagavatapurana 6.3.18

6.3.18

bhūtāni viṣṇoḥ surapūjitāni durdarśaliṅgāni mahādbhutāni /
rakṣanti tadbhaktimataḥ parebhyo mattaśca martyān atha sarvataśca //

18. The messengers of Vishnu are worshipped by the gods; they are wonderful; their forms do not easily become visible; they protect His votaries, though mortals, from their enemies, from me also, yea, from every (danger).