A.T. Robertson Commentary John 14:6

"Jesus saith unto him, I am the way, and the truth, and the life: no one cometh unto the Father, but by me." — John 14:6 (ASV)

I am the way, and the truth, and the life (Εγω ειμ η οδος κα η αληθεια κα η ζωη). Either of these statements is profound enough to stagger any one, but here all three together overwhelm Thomas. Jesus had called himself "the life" to Martha (11:25) and "the door" to the Pharisees (10:7) and "the light of the world" (8:12). He spoke "the way of God in truth" . He is the way to God and the only way (verse 6), the personification of truth, the centre of life.

Except by me (ε μη δι' εμου). There is no use for the Christian to wince at these words of Jesus. If he is really the Incarnate Son of God (1:1,14,18, they are necessarily true.