William Kelly (1821-1906) was an outstanding classical scholar in his generation, preacher, teacher, editor of several influential religious magazines and of John Nelson Darby's Collected Writings, and a prolific author in his own right. He was a major figure in the late nineteenth century return to basic biblical teaching usually known as the Brethren movement, often seen as the cradle of dispensationalism. A Canadian contemporary described him as second only to Mr Darby in knowledge of the Truth, and first in ability to state the Truth clearly. A frequent lecturer, he subsequently revised and published many of his lectures in book form. His familiarity with the original languages of the Bible led to well-researched expositions of both Old and New Testament books, which were widely read and highly regarded by Christians in his own time, and still today. With a genius for exposition, he combines scholarship and spirituality so that his readers gain a real sense of his unrestrained love for the Lord of whom the inspired pages of scripture speak. This book considers six aspects of the Church of God: formed as the body of Christ; accepting the direction of the Holy Spirit; responsible to Jesus as Lord; engaged in worship, remembrance and prayer; using gifts; and receiving practical resources daily in faith. Accepting the absolute authority of the Word of God, he opens up what the Bible has to say on each of these topics. Getting to the heart of the matter, in a logical way, he challenges every Christian to consider the practical implications for their communion and conduct as members of the Church of God.