I am: See study note on 6:35. You can only access the Father through Jesus, who is the way and the truth and the life.
The way to the Father is only through Jesus. Other religions and philosophies suggest different ways to God. But Jesus claimed he is the only way to God.
Jesus is the truth because God is truth.
God is the source of eternal life. At Lazarus’s tomb, Jesus demonstrated his divine power over life and death (11:25).