Let those entrusted with the “ministry of the keys” in Christ’s church (cf. Matt 16:19) be careful to protect those in their charge. Just as they examine prospective members and officers of a congregation, so let them also examine itinerants such as missionaries and guest speakers. Let them also carefully counsel individual families on their response to itinerant heretics lest their homes become a snare of the devil. Why do this? Because Christians are devoted both to love and to truth. In other words, authentic Christian love means always protecting ourselves and others against false teachers and their teachings.
In Scripture, Christians are called to devote themselves both to truth and to love. But can we pursue one without sacrificing the other? To get the bottom of this question, it helps us to reflect on John’s second letter. For our purposes here, we’ll understand the sender, the Elder, to be the Apostle John and the recipients, the elect lady and her children, to be a congregation and its members (as a whole and in its parts) or perhaps a mother church and the congregations born (planted) out of it.
The letter’s opening (2Jn 1-3) stands out for the way John describes the recipients’ relationship to himself and to others. First, he indicates how the recipients are related to him: whom I love in [the] truth. John most probably means that his love for them is not merely sincere, but is consistent with and required by God’s revealed truth. It is a love based in the truth they share. In fact, he will confirm this in 2Jn 7, 9. Second, he describes in a most striking way how the recipients are related to others: all who know the truth love the elect lady and her children in [the] truth. And why is this the case? He tells us: because of the truth that abides in us and will be with us forever (2Jn 2). In other words, they were bound in love because they were bound in truth. The love they shared was based in the truth they shared. After expressing his gratitude that these believers were living according to the truth despite opposition (2Jn 4), John takes up his exhortation in 2Jn 5-11.
John is careful to start off his appeal by establishing the link between truth and love. Basically, he says, “live your lives in keeping with love, just as y’all are living your lives in keeping with truth” (2Jn 5). Commitment to truth will bear fruit in commitment to love, and devotion to love will bear fruit in devotion to truth. Before moving on, John emphasizes, as he does elsewhere, that this duty to love is not new, novel, innovative, or even original with the Apostle himself. It’s the same obligation we’ve heard from the beginning. Whether we’re talking about the teaching of Jesus during His earthly ministry (Jn 13:34), the code of Moses at Sinai (Lev 19:18), or a duty binding even on Adam and his children (1Jn 3:11-12), our duty to love is a longstanding responsibility.
After John briefly reminds us of our duty to love, he states his reason for recalling that duty: For many deceivers have gone out into the world, those who do not confess the coming of Jesus Christ in the flesh.