Bhagavad Gita 10.2

Neither the professors of divinity nor the great ascetics know My origin, for I am the source from which they all originate.

न मे विदुः सुरगणाः प्रभवं न महर्षयः।
अहमादिर्हि देवानां महर्षीणां च सर्वशः॥

na me viduḥ suragaṇāḥ prabhavaṃ na maharṣayaḥ|
ahamādirhi devānāṃ maharṣīṇāṃ ca sarvaśaḥ||

English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).