"Jesus answered 'I am the way and the truth and the life. No one come to the Father except through me."

"I AM THE WAY" - Jesus declared that he is the way - not just a teacher of the way, but the way itself. This term "the way" was generally applied to the covenant of Moses (Dueteronomy 10:12-13). By declaring himself the way, Jesus was referring to himself as the fulfillment of the Old Covenant and the basis of a New Covenant with the God. The way to God, as prescribed in the Old Testament, was now personified in Jesus.

"I AM THE TRUTH" - Again, Jesus declared himself to be the truth - not just a teacher of the truth, but the truth itself. Throughout Scripture, the term "truth" was reserved for God's Word (Psalm 119:43, John 17:17), yet Jesus applies the term to himself. The truth of God's Word was not personified in Jesus (John 1:14, 17)

"I AM THE LIFE" - Once again, Jesus called himself the life - not just the giver of life, but the life itself (John 11:25). Jesus described himself as the source of life itself, a term which had previously been used to refer to the Scriptures (note John 5:39-40).

(this is quoted from my bible study - onlinebiblecollege.com)

John 14:6