One verse

Srimad Bhagavatam 6.14.1

6.14.1

श्रीपरीक्षिदुवाच रजस्तम:स्वभावस्य ब्रह्मन् वृत्रस्य पाप्मन: । नारायणे भगवति कथमासीद् दृढा मति: ॥ १ ॥

sri-pariksid uvaca rajas-tamah-svabhavasya brahman vrtrasya papmanah narayane bhagavati katham asid drdha matih

sri-pariksit uvaca
King Pariksit inquired
rajah
of the mode of passion
tamah
and of the mode of ignorance
sva-bhavasya
having a nature
brahman
O learned brahmana
vrtrasya
of Vrtrasura
papmanah
who was supposedly sinful
narayane
in Lord Narayana
bhagavati
the Supreme Personality of Godhead
katham
how
asit
was there
drdha
very strong
matih
consciousness.

King Pariksit inquired from Sukadeva Gosvami: O learned brahmana, demons are generally sinful, being obsessed with the modes of passion and ignorance. How, then, could Vrtrasura have attained such exalted love for the Supreme Personality of Godhead, Narayana?