In 1951, with the Second World War not long over and the menace of the Cold War generating anxiety in the West, Martyn Lloyd-Jones preached eight sermons on John 14:1-12. These sermons, presented in Let Not Your Heart Be Troubled, were intended to comfort, strengthen, and build up Christians in their “most holy faith” and to bring unbelievers to a knowledge of the only way men and women can face matters of life and death.