Addressed to all who anywhere bore the Christian name; appears to have been written not long before his death to counteract certain fatal forms of error, at once doctrinal and practical, that had already begun to creep into the Church, and against which we meet with the same warnings in the Epistle of Jude, the doctrinal error being the denial of Christ as Lord, and the practical the denial of Him as the way, the truth, and the life, to the peril of the forfeiture of eternal life.