Beloved, if God so loved us, we ought also to love one another -

(1) Because he is so much exalted above us, and if he has loved those who were so inferior and so unworthy, we ought to love those who are on a level with us;

(2) because it is only in this way that we can show that we have his Spirit; and,

(3) because it is the nature of love to seek the happiness of all. There are much stronger reasons why we should love one another than there were why God should love us; and unless we do this, we can have no evidence that we are his children.

If God so loved us - Without any reason or consideration on our part, and without any desert in us; we ought also, in like manner, to love one another, and not suspend our love to a fellow-creature, either on his moral worth or his love to us. We should love one another for God's sake; and then, no unkind carriage of a brother would induce us to withdraw our love from him; for if it have God for its motive and model, it will never fail.

Beloved, if God so loved us,.... As to send his Son to be a propitiatory sacrifice for our sins, and to obtain eternal life for us through his sufferings and death: the apostle uses the same language his Lord and master did, John 3:16;

we ought also to love one another; for those who are the objects of God's love ought to be the objects of ours; and if God has loved our fellow Christians and brethren to such a degree, as to send his Son to die for them, we ought to love them too; and if we are interested in the same love, the obligation is still the greater; and if God loved them with so great a love, when they did not love him, but were enemies to him, then surely we ought to love them now they are become the friends of God, and ours also; as God loved them freely, and when unlovely, and us likewise in the same manner, and under the same circumstances, then we ought to love, and continue to love the saints, though there may be something in their temper and conduct disagreeable: God is to be imitated in his love; and his love to us, which is unmerited and matchless, should influence and engage us to the love of the brethren, who have a far greater claim to our love than we can make to the love of God; and which indeed is none at all, but what he is pleased to give us.

So (οὕτως)

Emphatic.

We ought

See on 1 John 2:6.

{9} Beloved, if God so loved us, we ought also to love one another.

(9) An other reason by comparison: if God so loved us, shall not we his children love one another?

4:11 Beloved, if God so loved us, we ought also to love one another. If we are of God, and God so loves us, we must love one another.

11. God's love to us is the grand motive for our love to one another (1Jo 3:16).

if-as we all admit as a fact.

we . also-as being born of God, and therefore resembling our Father who is love. In proportion as we appreciate God's love to us, we love Him and also the brethren, the children (by regeneration) of the same God, the representatives of the unseen God.

4:7-13 The Spirit of God is the Spirit of love. He that does not love the image of God in his people, has no saving knowledge of God. For it is God's nature to be kind, and to give happiness. The law of God is love; and all would have been perfectly happy, had all obeyed it. The provision of the gospel, for the forgiveness of sin, and the salvation of sinners, consistently with God's glory and justice, shows that God is love. Mystery and darkness rest upon many things yet. God has so shown himself to be love, that we cannot come short of eternal happiness, unless through unbelief and impenitence, although strict justice would condemn us to hopeless misery, because we break our Creator's laws. None of our words or thoughts can do justice to the free, astonishing love of a holy God towards sinners, who could not profit or harm him, whom he might justly crush in a moment, and whose deserving of his vengeance was shown in the method by which they were saved, though he could by his almighty Word have created other worlds, with more perfect beings, if he had seen fit. Search we the whole universe for love in its most glorious displays? It is to be found in the person and the cross of Christ. Does love exist between God and sinners? Here was the origin, not that we loved God, but that he freely loved us. His love could not be designed to be fruitless upon us, and when its proper end and issue are gained and produced, it may be said to be perfected. So faith is perfected by its works. Thus it will appear that God dwells in us by his new-creating Spirit. A loving Christian is a perfect Christian; set him to any good duty, and he is perfect to it, he is expert at it. Love oils the wheels of his affections, and sets him on that which is helpful to his brethren. A man that goes about a business with ill will, always does it badly. That God dwells in us and we in him, were words too high for mortals to use, had not God put them before us. But how may it be known whether the testimony to this does proceed from the Holy Ghost? Those who are truly persuaded that they are the sons of God, cannot but call him Abba, Father. From love to him, they hate sin, and whatever disagrees with his will, and they have a sound and hearty desire to do his will. Such testimony is the testimony of the Holy Ghost.