“They are teachers who point to their teaching or show some particular way. In all of these, there emerges an instruction, a way of living. It is not Zoroaster to whom you turn. It is Zoroaster to whom you listen. It is not Buddha who delivers you; it is his Noble Truths that instruct you. It is not Mohammed who transforms you; it is the beauty of the Koran that woos you. By contrast, Jesus did not only teach or expound His message. He was identical with His message. ‘In Him,’ say the Scriptures, ‘dwelt the fullness of the Godhead bodily.’ He did not just proclaim the truth. He said, ‘I am the truth.’ He did not just show a way. He said, ‘I am the Way.’ He did not just open up vistas. He said, ‘I am the door.’ ‘I am the Good Shepherd.’ ‘I am the resurrection and the life.’ ‘I am the I AM.’ In Him is not just an offer of life’s bread. He is the bread. That is why being a Christian is not just a way of feeding and living. Following Christ begins with a way of relating and being.”
I imagine it’s hard for someone, generally, to understand when another person talks about “having a personal relationship with Christ”. The quotation above provides some explanation for a statement like that, but I suspect it isn’t enough.