Bhagavad Gita 4.5
श्री भगवानुवाच · śrī bhagavānuvāca
बहूनि मे व्यतीतानि जन्मानि तव चार्जुन।तान्यहं वेद सर्वाणि न त्वं वेत्थ परन्तप॥
bahūni me vyatītāni janmāni tava cārjuna |tānyahaṃ veda sarvāṇi na tvaṃ vettha parantapa ||
The Blessed Lord said, "Many births of Mine have passed, as well as of thine, O Arjuna; I know them all, but thou knowest not, O Parantapa (scorcher of foes)."
Lord Shri Krishna replied: I have been born again and again, from time to time; thou too, O Arjuna! My births are known to me, but yours are unknown to you.
Our plain-language meaning of this verse is waiting for scholar review.