In John 8:31-59 Jesus was unafraid to speak openly about His claims to the Pharisees even though it cut across their understanding of truth. In a long debate between Jesus and the Pharisees, Jesus made some very significant claims as to His divinity, especially claiming to have lived long before Abraham, and that though the Pharisees claimed to be descended from Abraham, this did not make them right with God.  Salvation comes through faith in Jesus not by the process of birth.