"THE supremacy of Spirit was the foundation on which Jesus built" (Science and Health with Key to the Scriptures by Mary Baker Eddy, p. 138). Thus in one brief sentence Mrs. Eddy directs thought to the Way-shower and his basis of teaching, preaching, and works. "The supremacy of Spirit"! As one ponders these words and their mighty significance, there comes the realization that they express the same truth which was given by Moses to the children of Israel in the First Commandment, "Thou shalt have no other gods before me."
Every student of Christian Science early learns that the very starting point of its teaching is that God, Spirit, is supreme, infinite, ever-present good. And who does not desire to have good supreme? All mankind desires good. But the difficulty lies in the fact that good is interpreted in many different ways by those still walking in the darkness of belief in two powers, antagonistic to each other. However, since the advent of Christian Science, which restates and elucidates the teaching of Christ Jesus, multitudes of people all over the world have been learning how to build the structure of Christian character wisely, firmly, safely, on the foundation of Spirit's supremacy.
It is worthy of notice that Jesus gave to his followers the teaching which has since been called the Sermon on the Mount. In this sermon the Master not only set forth basic truths regarding the establishment of God's kingdom, but also gave directions for applying these truths in daily living. This memorable discourse closed with a parable which should have awakened every disciple to the important lesson Jesus taught regarding their work as his followers. He likened each individual who heard his sayings and practiced them to a wise man who built his house upon a rock, so that it was able to withstand the storms. And he said, "Every one that heareth these sayings of mine, and doeth them not, shall be likened unto a foolish man, which built his house upon the sand." So, if we build on an unstable foundation, our structure likewise is unstable, easily demolished by the winds of adversity, the destructive tendencies of mortal mind.