One verse

Srimad Bhagavatam 10.3.44

10.3.44

एतद् वां दर्शितं रूपं प्राग्जन्मस्मरणाय मे । नान्यथा मद्भ‍वं ज्ञानं मर्त्यलिङ्गेन जायते ॥ ४४ ॥

etad vāṁ darśitaṁ rūpaṁ prāg-janma-smaraṇāya me nānyathā mad-bhavaṁ jñānaṁ martya-liṅgena jāyate

etat
this form of Viṣṇu
vām
unto both of you
darśitam
has been shown
rūpam
My form as the Supreme Personality of Godhead with four hands
prāk-janma
of My previous appearances
smaraṇāya
just to remind you
me
My
na
not
anyathā
otherwise
mat-bhavam
Viṣṇu’s appearance
jñānam
this transcendental knowledge
martya-liṅgena
by taking birth like a human child
jāyate
does arise

I have shown you this form of Viṣṇu just to remind you of My previous births. Otherwise, if I appeared like an ordinary human child, you would not believe that the Supreme Personality of Godhead, Viṣṇu, has indeed appeared.