First Church of Christ, Scientist Mercer Island

Christian Science Church and Reading Room

Welcome to the website for First Church of Christ, Scientist, in Mercer Island, Washington, USA.  Here you will find information on Christian Science, our church services and Sunday School, and our Reading Room in the Mercer Island Town Center.  Enjoy your browse through our pages.  We are glad you found us and hope you will join us for church and Sunday School.


Christian Science is based on eternal truths of the Bible.  Mary Baker Eddy discovered these Biblical truths in 1866.  She described them in a book that she named Science and Health with Key to the Scriptures. Along with the Bible, it includes the entire explanation of the teachings of Christian Science. This is her most important and widely read book, available in 17 languages.  The following web pages will help you explore this wonderful religion and way of life.

What is Christian Science?  Christian Science and its healing ministry rests entirely on the affirmation from the Bible that “God is love” (I John 4:16). Those who practice it strive to live the bold, compassionate, pure, generous love that Christ Jesus embodied and taught in his Sermon on the Mount (Matthew 5–7). This is the heart of its Christianity.

Christian Science is also a science because God is understood to be unchanging Love—the infinite Principle that is constant, universal, inclusive, eternal, the only true power and source of all good. It explains the spiritual laws of Love that enabled Jesus to heal sickness and sin. This divine Science also answers our fundamental questions about evil, reality, and eternal life. And as the word science implies, it is reliable, consistent, and provable, bringing healing to individuals and humanity through a deeper understanding of God.

 The Bible & Science and Health: The Bible is the basis of Mary Baker Eddy’s teachings. Christian Scientists of all ages study the Bible and work to apply the lessons learned from Scripture in their daily lives. Science and Health with Key to the Scriptures by Mary Baker Eddy is the Christian Science textbook.  In it Mary Baker Eddy explains the scientific laws behind the teachings and healings of Christ Jesus. The Bible and Science and Health with Key to the Scriptures comprise the pastor of the denomination and are central to Sunday School and adherents' ongoing study. 

About the Founder, Mary Baker Eddy: Mary Baker Eddy (1821-1910) discovered and founded Christian Science. Often asked how she was able to heal, Eddy explained and documented it in her primary work, Science and Health with Key to the Scriptures, and named her discovery Christian Science. In 1879, she founded the Church of Christ, Scientist based on the teachings and healings of Christ Jesus, and later ordained the Bible and Science and Health as pastor of the church.  




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