5 And now I beseech thee, lady, not as writing to thee a new commandment, but that which we have had from [the] beginning, that we should love one another. 6 And this is love, that we should walk according to his commandments. This is the commandment, according as ye have heard from the beginning, that ye might walk in it.
Matthew Henry's Commentary on 2 John 1:5-6
Commentary on 2 John 1:4-6
(Read 2 John 1:4-6)
It is good to be trained to early religion; and children may be beloved for their parents' sake. It gave great joy to the apostle to see children treading in their parents' steps, and likely in their turn to support the gospel. May God bless such families more and more, and raise up many to copy their example. How pleasing the contrast to numbers who spread irreligion, infidelity, and vice, among their children! Our walk is true, our converse right, when according to the word of God. This commandment of mutual Christian love, may be said to be a new one, in respect of its being declared by the Lord Christ; yet, as to the matter, it is old. And this is love to our own souls, that we obey the Divine commands. The foresight of the decay of this love, as well as of other apostacies, or fallings away, might engage the apostle to urge this duty, and this command, frequently and earnestly.