Bhagavad Gita 10.15

स्वयमेवात्मनात्मानं वेत्थ त्वं पुरूषोत्तम |
भूतभावन भूतेश देवदेव जगत्पते

Translation

Indeed, You alone know Yourself by Your inconceivable energy, O Supreme Personality, the Creator and Lord of all beings, the God of gods, and the Lord of the universe!