One verse

Srimad Bhagavatam 4.29.3

4.29.3

योऽविज्ञाताहृतस्तस्य पुरुषस्य सखेश्वर: । यन्न विज्ञायते पुम्भिर्नामभिर्वा क्रियागुणै: ॥ ३ ॥

yo ’vijnatahrtas tasya purusasya sakhesvarah yan na vijnayate pumbhir namabhir va kriya-gunaih

yah
he who
avijnata
unknown
ahrtah
described
tasya
of him
purusasya
of the living entity
sakha
the eternal friend
isvarah
the master
yat
because
na
never
vijnayate
is understood
pumbhih
by the living entities
namabhih
by names
va
or
kriya-gunaih
by activities or qualities.

The person I have described as unknown is the Supreme Personality of Godhead, the master and eternal friend of the living entity. Since the living entities cannot realize the Supreme Personality of Godhead by material names, activities or qualities, He remains everlastingly unknown to the conditioned soul.