Wesley's Journal entry for 24th May, 1738, BE 18:249f

"In the evening 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 before 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 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."