The time spent reasoning or meditating on the things of Spirit is a most important one, for it is in this manner that one is renewed in spirit. As he meditates on some point in the teachings of Christian Science, he makes it his own, and by this process the false beliefs that he may have entertained about God and about himself are replaced by the truth about God and his own true being as a child of God. As this truth fills thought, healing takes place.
In "Science and Health with Key to the Scriptures" (pp. 327, 328) Mary Baker Eddy writes: "Reason is the most active human faculty. Let that inform the sentiments and awaken the man's dormant sense of moral obligation, and by degrees he will learn the nothingness of the pleasures of human sense and the grandeur and bliss of a spiritual sense, which silences the material or corporeal. Then he not only will be saved, but is saved." As we gain an understanding of God, we begin to trust Him to meet our every need, for we learn that He is omnipotent and omnipresent good, Mind, Life, and Love; also that man is His image and likeness, reflecting Him in all His glory. This gives us the ability to utilize our understanding in working out any problem that may confront us.
In Isaiah 1:18 we read, "Come now, and let us reason together, saith the Lord: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool." On page 492 of Science and Health we read, "For right reasoning there should be but one fact before the thought, namely, spiritual existence."