Bhagavad Gita Chapter 9, Verse 11

अवजानन्ति मां मूढा मानुषीं तनुमाश्रितम् | परं भावमजानन्तो मम भूतमहेश्वरम् ||

avajānanti māṁ mūḍhā mānuṣīṁ tanum āśritam paraṁ bhāvam ajānanto mama bhūta-maheśvaram

Fools disregard Me when I assume a human form, not knowing My transcendental nature as the Supreme Lord of all beings.

Krishna reveals the folly of those who disregard the Supreme: 'Avajānanti māṁ mūḍhā mānuṣīṁ tanum āśritam'—fools (mūḍhāḥ) disregard (avajānanti) Me (mām) when I assume (āśritam) a human form (mānuṣīṁ tanum). 'Paraṁ bhāvam ajānanto mama bhūta-maheśvaram'—not knowing (ajānantaḥ) My transcendental nature (paraṁ bhāvam mama) as the Supreme Lord of all beings (bhūta-maheśvaram). This is the great mistake: seeing only the human form, not recognizing the Supreme within. Fools see the body, not the Supreme. They disregard Him because they don't know His true nature. This is the folly of material vision: seeing the form, not the Supreme. This is why faith is essential—to see beyond the form to the Supreme.