In this memorial service for W.T.H. Richards, preached at Westminster Chapel on November 2, 1974 Dr. Martyn Lloyd-Jones delivers a powerful exposition of 1 Corinthians 16:13-14, calling believers to spiritual vigilance in increasingly perilous times. Drawing from Paul's exhortation to "watch, stand fast in the faith, quit you like men, be strong," Dr. Lloyd-Jones warns of subtle dangers threatening the evangelical faith, particularly changes in the preceding decade. He cautions against false unity with Roman Catholicism, the "new evangelicalism" promoting territorial churches, and compromises with modernist theology. Dr. Lloyd-Jones emphasizes that true biblical watchfulness must be balanced with standing firm in essential doctrines while demonstrating genuine Christian love. He challenges believers not to fear intellectual scorn or the desire for respectability, but instead to follow the example of biblical figures and historic Christians who stood boldly for truth. The sermon concludes with a stirring call for both doctrinal orthodoxy and the power of the Holy Spirit, arguing that the greatest need of the hour is spiritual revival. This message serves as both a tribute to W.T.H. Richards' steadfast ministry and a clarion call for believers to maintain biblical fidelity in times of theological confusion.