And may be in his true Son. He is, or this is the true God, and life eternal... Which words are a clear proof of Christ's divinity, and as such made use of by the ancient fathers.
5:21. Little children, keep yourselves from idols. Amen.
Keep yourselves from idols... An admonition to the newly converted Christians, lest conversing with heathens and idolaters, they might fall back into the sin of idolatry, which may be the sin unto death here mentioned by St. John.
Book 70 2 John
THE SECOND EPISTLE OF ST. JOHN THE APOSTLE
The Apostle commends Electa and her family for their steadfastness in the true faith and exhorts them to persevere, lest they lose the reward of their labours. He exhorts them to love one another. But with heretics to have no society, even not to salute them. Although this Epistle is written to a particular person, yet its instructions may serve as a lesson to others, especially to those who, from their connections, situation, or condition in life, are in danger of perversion.
2 John Chapter 1