John the Elder, the “disciple Jesus loved,” authored five books in the New Testament—the Gospel for salvation, the three letters for sanctification, and Revelation (Apocalypse) for glorification. These writings are not structures, like Paul, as eloquent doctrinal essays. Each was written, instead, with a pastoral tone—scattered in flow, more conversational. He begins here, in 1 John, with solid encouragement to a church assaulted by heresy.