The Unity of the Church Essential to the Conversion of the World / A Sermon, Preached Before the Directors and Friends of the London Missionary Society, During Their Anniversary in May, 1846, in the Church of St. Mary, Spital Square, London

A sermon delivered before the London Missionary Society argues that Christ's final intercessions demonstrate the primacy of prayer and the necessity of visible unity among believers for the world's conversion. It interprets the Savior's plea for oneness as a prerequisite for credible evangelism, links church harmony to social concerns such as poverty, war, and slavery, and urges congregational sympathy, prayer, and active mission work. The preacher organizes the message around three points: the object of the petition, the means to promote it, and reasons for desiring it, blending biblical reflection with pastoral exhortation to make unity both a spiritual duty and a practical strategy for spreading the gospel.