And this is his commandment, That we should believe, &c. Namely, all his commandments: in one word, That we should believe and love In the manner and degree which he hath taught. This is the greatest and most important command that ever issued from the throne of glory. If this be neglected, no other can be kept; if this be observed, all others are easy. And he that keepeth his commandments That thus believes and loves; dwelleth, or abideth in him In Christ Jesus, or in God the Father; and he Christ, or the Father; in him This seems to be an allusion to our Lord's words, John 14:23; If a man love me, he will keep my words, and my Father will love him, and we will come unto him, and make our abode with him. That is, in this way we obtain fellowship with the Father, as well as with the Son; yea, the most intimate acquaintance, friendship, and communion, and are thereby made unspeakably happy; and hereby we know that he abideth in us That we have this intimate union and communion with him; by the Spirit which he hath given us The Spirit of adoption and regeneration, witnessing with our spirits that we are his children, and producing in us love, joy, and peace, holiness and happiness.
Related Commentaries of 1 John 3:23
1 John 3:23-24
23 And this is his commandment, That we should believe on the name of his Son Jesus Christ, and love one another, as he gave us commandment.
24 And he that keepeth his commandments dwelleth in him, and he in him. And hereby we know that he abideth in us, by the Spirit which he hath given us.