Bhagwad Gita
Chapter 4, Verse 6
अजोऽपि सन्नव्ययात्मा भूतानामीश्वरोऽपि सन्।
प्रकृतिं स्वामधिष्ठाय संभवाम्यात्ममायया।।4.6।।
Although I am unborn and My transcendental body never deteriorates, and although I am the Lord of all sentient beings, I still appear in every millennium in My original transcendental form.