SEV Biblia, Chapter 4:21
Y nosotros tenemos este mandamiento de él: Que el que ama a Dios, ame también a su Hermano.
Clarke's Bible Commentary - 1 John 4:21
Verse 21. This commandment have we] We should love one another, and love our neighbour as ourselves. The love of God and the love of man can never be separated; he who loves God will love his brother; he who loves his brother gives this proof that he loves God, because he loves with a measure of that love which, in its infinitude, dwells in God.
John Gill's Bible Commentary
Ver. 21. And this commandment have we from him , &c.] Either “from God”, as the Alexandrian copy and the Vulgate Latin version read; and that to love the brethren is a commandment of God, is clear from ( 1 John 3:23); or from Christ, for it is also a command of his, even his new commandment, which he has given, and his people have received from him: that he who loveth God, love his brother also ; (see John 13:34) ( John 15:12,17); which is an argument persuading to attend to the one as well as to the other; for the same command that requires the one, requires the other: and he that transgresses it in one case, is a transgressor of it, as well as in the other.
Matthew Henry Commentary
Verses 14-21 - The Father sent the Son, he willed his coming into this world. The apostle attests this. And whosoever shall confess that Jesus is the So of God, God dwelleth in him, and he in God. This confession include faith in the heart as the foundation; makes acknowledgment with the mouth to the glory of God and Christ, and profession in the life an conduct, against the flatteries and frowns of the world. There must be a day of universal judgment. Happy those who shall have holy boldnes before the Judge at that day; knowing he is their Friend and Advocate Happy those who have holy boldness in the prospect of that day, wh look and wait for it, and for the Judge's appearance! True love to God assures believers of God's love to them. Love teaches us to suffer for him and with him; therefore we may trust that we shall also be glorified with him, 2Ti 2:12. We must distinguish between the fear of God and being afraid of him; the fear of God imports high regard an veneration for God. Obedience and good works, done from the principl of love, are not like the servile toil of one who unwillingly labour from dread of a master's anger. They are like that of a dutiful child who does services to a beloved father, which benefit his brethren, an are done willingly. It is a sign that our love is far from perfect when our doubts, fears, and apprehensions of God, are many. Let heave and earth stand amazed at his love. He sent his word to invite sinner to partake of this great salvation. Let them take the comfort of the happy change wrought in them, while they give him the glory. The love of God in Christ, in the hearts of Christians from the Spirit of adoption, is the great proof of conversion. This must be tried by it effects on their temper, and their conduct to their brethren. If a ma professes to love God, and yet indulges anger or revenge, or shows selfish disposition, he gives his profession the lie. But if it is plain that our natural enmity is changed into affection and gratitude let us bless the name of our God for this seal and earnest of eterna happiness. Then we differ from the false professors, who pretend to love God, whom they have not seen, yet hate their brethren, whom the have seen __________________________________________________________________
Greek Textus Receptus
και 2532 ταυτην 3778 την 3588 εντολην 1785 εχομεν 2192 5719 απ 575 αυτου 846 ινα 2443 ο 3588 αγαπων 25 5723 τον 3588 θεον 2316 αγαπα 25 5725 και 2532 τον 3588 αδελφον 80 αυτου 846
Vincent's NT Word Studies
21. That (ina). Not defining the contents of the commandment, but expressing intent. Compare John xiii. 34, and see on John xv. 13. His brother. "To the persecutor Saul, Christ said, 'Saul, Saul, why persecutest thou Me? I have ascended into heaven, yet still I lie upon earth. Here I sit at the right hand of the Father; there I still hunger, thirst, and am a stranger'" (Augustine).