Verse 6. - And this is love; i.e., the love which the commandment enjoins consists in this - active and unremitting obedience. Just as in the sphere of thought truth must be combined with love (see on verse 3), so in the sphere of emotion love must be combined with obedience. Warm feelings, whether towards God or towards man, are worse than valueless if they are not united, on the one hand with obedience, on the other with truth. This was the elect lady's danger; in the exuberance of her chanty she was forgetting her obligations to the truth and the commandment.

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.And this is love, that we walk after his commandments,.... By observing them as a rule of conversation, in so doing love is shown to God; and such may expect the fresh discoveries of the love of God to, them; See Gill on 1 John 5:3;

this is the commandment, that as ye have heard from the beginning,

ye should walk in it; that is, this is the will of God, that his people should walk in the truth of the Gospel, and abide by it, as they heard and received it at their first conversion, from the mouths of the apostles, or other faithful ministers of the word; a reason for which, is given in 2 John 1:7.