Verse 7. Brethren, I write no new commandment unto you. That is, what I am now enjoining is not new. It is the same doctrine which you have always heard. There has been much difference of opinion as to what is referred to by the word commandment, whether it is the injunction in the previous verse to live as Christ lived, or whether it is what he refers to in the following verses, the duty of brotherly love. Perhaps neither of these is exactly the idea of the apostle, but he may mean in this verse to put in a general disclaimer against the charge that what he enjoined was new. In respect to all that he taught, the views of truth which he held, the duties which he enjoined, the course of life which he would prescribe as proper for a Christian to live, he meant to say that it was not at all new; it was nothing which he had originated himself, but it was in fact the same system of doctrines which they had always received since they became Christians. He might have been induced to say this because he apprehended that some of those whom he had in his eye, and whose doctrines he meant to oppose, might say that this was all new; that it was not the nature of religion as it had been commonly understood, and as it was laid down by the Saviour. In a somewhat different sense, indeed, he admits 1 Jo 2:8 that there was a "new" commandment which it was proper to enjoin -- for he did not forget that the Saviour himself called that "new;" and though that commandment had also been all along inculcated under the gospel, yet there was a sense in which it was proper to call that new, for it had been so called by the Saviour. But in respect to all the doctrines which he maintained, and in respect to all the duties which he enjoined, he said that they were not new in the sense that he had originated them, or that they had not been enjoined from the beginning. Perhaps, also, the apostle here may have some allusion to false teachers who were in fact scattering new doctrines among the people, things before unheard of, and attractive by their novelty; and he may mean to say that he made no pretensions to any such novelty, but was content to repeat the old and familiar truths which they had always received. Thus, if he was charged with breaching new opinions, he denies it fully; if they were advancing new opinions, and were even "making capital" out of them, he says that he attempted no such thing, but was content with the old and established opinions which they had always received.

But an old commandment. Old, in the sense that it has always been inculcated; that religion has always enjoined it.

Which ye had from the beginning. Which you have always received ever since you heard anything about the gospel. It was preached when the gospel was first preached; it has always been promulgated when that has been promulgated; it is what you first heard when you were made acquainted with the gospel. Compare See Barnes "1 Jo 1:1".

The old commandment is the word which ye have heard from the beginning. Is the doctrine; or is what was enjoined. John is often in the habit of putting a truth in a new form or aspect in order to make it emphatic, and to prevent the possibility of misapprehension. See Joh 1:1,2. The sense here is, "All that I am saying to you is in fact an old commandment, or one which you have always had. There is nothing new in what I am enjoining on you."