Bhagavad Gita 2.12

न त्वेवाहं जातु नासं न त्वं नेमे जनाधिपा |
न चैव न भविष्यम्: सर्वे वयमत्: परम्

Translation

Never was there a time when I did not exist, nor you, nor all these kings; nor in the future shall any of us cease to be.