Shrimad Bhagavad Gita As It Is -Shri Shrimad A.C Bhaktivedanta Swami Prabhupada
Chapter 4: Verse-5
The Personality of Godhead said: Many, many births both you and I have passed. I can remember all of them, but you cannot, O subduer of the enemy!
In the Brahma-samhitä we have information of many, many incarnations of the Lord. It is stated there:
advaitam acyutam anädim ananta-rüpam
“I worship the Supreme Personality of Godhead, Govinda [Krsna], who is the original person—absolute, infallible, without beginning. Although expanded into unlimited forms, He is still the same original, the oldest, and the person always appearing as a fresh youth. Such eternal, blissful, all-knowing forms of the Lord are usually understood by the best Vedic scholars, but they are always manifest to pure, unalloyed devotees.” It is also stated in Brahma-samhitä
rämädi-mürtisu kalä-niyamena tisthan
“I worship the Supreme Personality of Godhead, Govinda [Krsna], who is always situated in various incarnations such as Räma, Nrsimha and many subincarnations as well, but who is the original Personality of Godhead known as Krsna, and who incarnates personally also.”
- sri-bhagavän uväca=the Personality of Godhead said; bahüni=many; me=of Mine; vyatitäni=have passed; janmäni=births; tava=of yours; ca=and also; arjuna=O Arjuna; täni=those; aham=I; veda=do know; sarväni=all; na=not; tvam=you; vettha=know; parantapa=O subduer of the enemy.