On this day, 1738, John Wesley wrote in his journal:
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 the leader 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 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.
As a result, Methodists mark this day with services.