One verse

Srimad Bhagavatam 7.13.22

7.13.22

यस्य नारायणो देवो भगवान्‍हृद्गत: सदा । भक्त्या केवलयाज्ञानं धुनोति ध्वान्तमर्कवत् ॥ २२ ॥

yasya narayano devo bhagavan hrd-gatah sada bhaktya kevalayajnanam dhunoti dhvantam arkavat

yasya
of whom
narayanah devah
the Supreme Personality of Godhead, Narayana
bhagavan
the Lord
hrt-gatah
in the core of the heart
sada
always
bhaktya
by devotional service
kevalaya
alone
ajnanam
ignorance
dhunoti
cleans
dhvantam
darkness
arka-vat
as the sun.

Narayana, the Supreme Personality of Godhead, who is full of all opulences, is predominant within the core of your heart because of your being a pure devotee. He always drives away all the darkness of ignorance, as the sun drives away the darkness of the universe.