"I am the way, the truth, and the life. No one comes to the Father except through Me." (John 14:6)
Christ proclaims Himself to be truth. He is truth because God Himself is truth. The nature and character of God is expounded for us fully in the person of Jesus Christ. He is the tangible expression of what we should know about God and how we should be in light of supernatural revelation.
It is on the basis of Christ being the truth that He can also be called the way to God the Father. The validity of the first claim depends completely on the second one. The very nature of truth is that of a light which shines in the darkness.
Truth has a sanctifying influence (John 17:17). It enables us to see things as they really are. Truth is what sets us free (John 8:32). It directs us in the way that we should go. Christ brings us into union with God. He is the physical expression of man's status before God.
Christ proclaims Himself to be life. Even though life en toto continues to exist by His power, He is speaking more broadly here than the physical kind. It is not something inherent to our state of being. It is a spiritual life that extends beyond the grave. The Apostles’ Creed affirms: “I believe...the resurrection of the body, and life everlasting.”
Truth is what gives life meaning. That is what makes it worth giving up one's own life for. It is the building block upon which everything else rests on. Truth and life find their ultimate realization in Jesus Christ Himself.