Why was the sabbath day instituted by the Lord, and does it continue now as the Lord's day? If so, in what way has it changed with the coming of Christ? How should it be kept? Is it true there was a conflict of views about the continuation of the sabbath between the early and later reformers? This book responds to these and other questions, showing that the sabbath principle is still God's will for believers today, and listing its purpose and blessings.