Bhagavad Gita 9.11
Fools disregard Me, seeing Me clad in human form. They do not know that in My higher nature, I am the Lord-God of all.
अवजानन्ति मां मूढा मानुषीं तनुमाश्रितम्।
परं भावमजानन्तो मम भूतमहेश्वरम्॥avajānanti māṃ mūḍhā mānuṣīṃ tanumāśritam|
paraṃ bhāvamajānanto mama bhūtamaheśvaram||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).