Overcoming sickness and sin through a growing understanding of the allness of God, good, is the natural result of practicing Christian Science. But healing oneself is really just the beginning of this practice.
Progressing spiritually, a Christian Scientist not only sees the need for healing in larger terms, on a global scale, but he learns of his ability to expand the sphere of his own healing work and to establish a worldwide practice of Christian healing. He sees this as being in line with what Christ Jesus expected of his followers. The Master told them, "Ye are the light of the world." Matt. 5:14. For Christian healers, Jesus' instruction and example strongly encourage an ever-widening reach of spiritually illumined thought.
The ability to have a far-reaching, healing impact in the world doesn't seem mysterious or unnatural when we understand that man isn't the materially-minded creature we've been educated to believe he is. His origin is Spirit, God, infinite and perfect Mind. Limited love or intelligence couldn't be characteristic of God's man, who expresses the boundless nature and power of Spirit. These limitations represent a false, mortal sense of man's abilities. Mary Baker Eddy, who discovered Christian Science, writes, "Mortals have a very imperfect sense of the spiritual man and of the infinite range of his thought." Science and Health with Key to the Scriptures, p. 258. Exchanging a less-than-spiritual, less-than-perfect sense of ourselves for what's true shows us more of our unfettered ability to do good in the world.