One verse

Srimad Bhagavatam 2.7.27

2.7.27

तोकेन जीवहरणं यदुलूकिकाया- स्त्रैमासिकस्य च पदा शकटोऽपवृत्त: । यद् रिङ्गतान्तरगतेन दिविस्पृशोर्वा उन्मूलनं त्वितरथार्जुनयोर्न भाव्यम् ॥ २७ ॥

tokena jiva-haranam yad uluki-kayas trai-masikasya ca pada sakato ’pavrttah yad ringatantara-gatena divi-sprsor va unmulanam tv itaratharjunayor na bhavyam

tokena
by a child
jiva-haranam
killing a living being
yat
one which
uluki-kayah
assumed the giant body of a demon
trai-masikasya
of one who is only three months old
ca
also
pada
by the leg
sakatah apavrttah
turned over the cart
yat
one who
ringata
while crawling
antara-gatena
being overtaken
divi
high in the sky
sprsoh
touching
va
either
unmulanam
uprooting
tu
but
itaratha
anyone else than
arjunayoh
of the two arjuna trees
na bhavyam
was not possible

There is no doubt about Lord Krsna’s being the Supreme Lord, otherwise how was it possible for Him to kill a giant demon like Putana when He was just on the lap of His mother, to overturn a cart with His leg when He was only three months old, to uproot a pair of arjuna trees, so high that they touched the sky, when He was only crawling? All these activities are impossible for anyone other than the Lord Himself.