In "Science and Health with Key to the Scriptures" by Mary Baker Eddy we read (p.428), "Man's privilege at this supreme moment is to prove the words of our Master: 'If a man keep my saying, he shall never see death.'" Is not "this supreme moment" the moment in which we are now living? It demands all our attention, the highest thinking of which we are capable. The standard for this thinking is to be found in our textbooks, the Bible and Science and Health. Since the average thinking of mankind is so far below the level of spiritual thinking necessary for demonstrating the facts of being, we need constantly to refresh ourselves from the Bible and all the writings of our Leader, whereby we gain habitual spiritualization of thought.
The average thinking, even of the Christian, is based on the concept of life bounded by birth at one end and death at the other. But Christian Science demands from us a view of life that denies both birth and death as any part of real existence. It turns us to the contemplation and acceptance of God, Mind, eternal Life and Love, as the sole reality of being; and, basing our thinking on the great fact of God's allness and of man's expression of this infinite perfection, we heal the sick.
Why is this moment the supreme moment? Because perfection is! The Bible tells us that "now are we the sons of God" (I John 3:2), and only as we work from this standpoint of perfection can we possibly bring it to light. The popular concept of existence is that we are all on a journey, coming from the unknown and going to an equally unknown destination, and that we appear in what we call "here" for the space of a few years and are going "there," to somewhere either better or worse. Jesus came preaching an entirely new and different concept of existence. He preached (Matt. 4: 17), "The kingdom of heaven is at hand." In other words, all good is here and now.