Her most popular writing and the church’s main textbook is Science and Health with Key to the Scriptures, although her little book Unity of Good is likewise very highly regarded.
... In keeping with such acclaim, it is interesting to note that throughout one of the chapters in the third edition of Science and Health, 1881, God was called “Mother,” and even in editions now in common use, on page 16, Mrs. Eddy renders the Lord’s Prayer: “Our Father-Mother God, all-harmonious, Adorable one.