He discovered the answer for himself on 24 May 1738, “In the evening,” he wrote, “I went very unwillingly to a society in Aldersgate Street, where one was reading Luther’s preface to the Epistle to the Romans. About a quarter to nine, while he was describing the change which God works in the heart through faith in Christ, I felt my heart strangely warmed. I felt that I did trust in Christ, Christ alone, for salvation; and an assurance was given me that he had taken away my sins, even mine, and saved me from the law of sin and death.”