These are the last words Jesus speaks at the end of St John's Gospel (setting apart the controversy about whether this chapter was added later). They are spoken in response to Peter who was asking about the destiny intended for John. "If I will that he should tarry till I come, what is that to thee? Follow thou me." It seems that Jesus was basically telling Peter to mind his own business. All he had to worry about was his own task.
But taking these words in a wider context I think they can allow an interpretation that applies to all of us. Our spiritual duty can be boiled down to one simple thing. Follow Christ. We can forget about advanced spiritual techniques and esoteric philosophies. They may be interesting, some may even be useful but really, we needn't complicate things by trying to search out deep metaphysical truths and hidden mysteries. We just have to follow Christ. If he really is, as he claimed to be, the Way, the Truth and the Life then our spiritual task is simple. It is to follow him. Conversely, if he really is the Way, the Truth and the Life and we don't follow him we are not living a proper spiritual life. Imagine spirituality can be conceived of as a circle. There are many points around the circumference and even within the circle itself. But there is only one centre. That is Christ.
However, two questions arise. What is following in this context and who is Christ? The answers to these questions might seem obvious. Following is believing in Christ and obeying his commandments, and Christ is the person described in the Gospels. But the person in the Gospels is actually just a literary figure. He's a character in a book. That might seem a shocking thing to say but if you think about it, it's true. Obviously, I am not decrying the books or what they have created in the hearts and minds of mankind but I am pointing to the truth that following Christ really means going beyond the outer teachings and discovering his living image in your heart. Not following the religion or the idea you might have about it or him. It means following the light of Christ which is within you. This will be illuminated by the Gospels and the inspiration they contain but the Christ you must follow is not so much in the Gospels as in your own heart. It is there you must discover him and it is that light you must follow.
And what does follow mean? Observe certain rules? Perhaps but not only that. Live a certain way? Yes, but there is more. Following Christ actually means becoming Christ. He is not there and you are here. You must become him by giving up your self and allowing him to take over. This is not some kind of spiritual vampirism. The self you give up is not that of your personal integrity and individual identity. It is the separate self, the greedy, selfish, grasping, egotistic, know it all self. This must be handed over to Christ.
Following Christ is taking the image of the living Saviour and stamping that seal on your heart. For this to take effect the heart must become soft which means open to spiritual impression. You cannot receive Christ unless and until you start to become like Christ. The inflexible spiritual law is like attracts like. But once you do open up your heart up to the Word of God then that will enter in and make its home there.