John 8:57 in the King James Version
Then said the Jews unto him, Thou art not yet fifty years old, and hast thou seen Abraham?
Context
56 Your father Abraham rejoiced to see my day. He saw it and was glad.”
57 The Jews therefore said to him, “You are not yet fifty years old! Have you seen Abraham?”
58 Jesus said to them, “Most certainly, I tell you, before Abraham came into existence, I AM.”