AND. CONSIDER THAT LOWLY CONJUNCTION. Yes, it's the writer's handy joining element, one that sometimes alerts readers that a conclusion is coming. But it's not often a word invested with meaning.
Yet, when Mary Baker Eddy began the sixth and final of her "important points, or religious tenets, of Christian Science" with "And we solemnly promise ..." perhaps she was signaling something more than "Here's my concluding point."
That solemn promise embraces some of the essentials of New Testament and contemporary Christian living: "to watch, and pray for that Mind to be in us which was also in Christ Jesus; to do unto others as we would have them do unto us [the Golden Rule]; and to be merciful, just, and pure" (you can find the six tenets in Science and Health with Key to the Scriptures on Page 497). Might her use of "And" point to the Sixth Tenet's substantive union, or conjunction with, the other five tenets? Those first five basic religious points are: the inspired Word's unerring guidance; acknowledging one supreme God, one Christ, the promised Comforter, and our wholly spiritual nature as God's image; as well as revealed truths about sin and forgiveness, atonement, and Jesus' resurrection. Don't these core ideas actually need to enter our hearts, guide our acts, and transform our lives? To open thought to a much bigger and nearer God, and to a nearer-to-nothing evil?
