For this is the charity of God, that we keep his commandments: and his commandments are not heavy.

for this is the love of God, that His commands we may keep, and His commands are not burdensome;

Love for God means obedience to His commands; and His commands are not irksome.

For loving God is keeping his laws: and his laws are not hard.

For this is the love of God: that we keep his commandments. And his commandments are not heavy.

For to love God is to do what he commands and his commands are not a burden,

His commandments are not grievous This has been added, lest difficulties, as it is usually the case, should damp or lessen our zeal. For they who with a cheerful mind and great ardor have pursued a godly and holy life, afterwards grow weary, finding their strength inadequate. Therefore John, in order to rouse our efforts, says that God's commandments are not grievous. But it may, on the other hand, be objected and said that we have found it far otherwise by experience, and that Scripture testifies that the yoke of the law is insupportable. (Acts 15:2.) The reason also is evident, for as the denial of self is, as it were, a prelude to the keeping of the law, can we say that it is easy for a man to deny himself? nay, since the law is spiritual, as Paul, in Romans 7:14, teaches us, and we are nothing but flesh, there must be a great discord between us and the law of God. To this I answer, that this difficulty does not arise from the nature of the law, but from our corrupt flesh; and this is what Paul expressly declares; for after having said that it was impossible for the Law to confer righteousness on us, he immediately throws the blame on our flesh. This explanation fully reconciles what is said by Paul and by David, which apparently seems wholly contradictory. Paul makes the law the master of death, declares that it effects nothing but to bring on us the wrath of God, that it was given to increase sin, that it lives in order to kill us. David, on the other hand, says that it is sweeter than honey, and more desirable than gold; and among other recommendations he mentions the following -- that it cheers hearts, converts to the Lord, and quickens. But Paul compares the law with the corrupt nature of man; hence arises the conflict: but David shews how they think and feel whom God by his Spirit has renewed; hence the sweetness and delight of which the flesh knows nothing. And John has not omitted this difference; for he confines to God's children these words, God's commandments are not grievous, lest any one should take them literally; and he intimates that, it comes through the power of the Spirit, that it is not grievous nor wearisome to us to obey God. The question, however, seems not as yet to be fully answered; for the faithful, though ruled by the Spirit, of God, yet, carry on a hard contest with their own flesh; and how muchsoever they may toil, they yet hardly perform the half of their duty; nay, they almost fail under their burden, as though they stood, as they say, between the sanctuary and the steep. We see how Paul groaned as one held captive, and exclaimed that he was wretched, because he could not fully serve God. My reply to this is, that the law is said to be easy, as far as we are endued with heavenly power, and overcome the lusts of the flesh. For however the flesh may resist, yet the faithful find that there is no real enjoyment except in following God. It must further be observed, that John does not speak of the law only, which contains nothing but commands, but connects with it the paternal indulgence of God, by which the rigor of the law is mitigated. As, then, we know that we are graciously forgiven by the Lord, when our works do not come up to the law, this renders us far more prompt to obey, according to what we find in Psalm 130:4, "With thee is propitiation, that thou mayest be feared." Hence, then, is the facility of keeping the law, because the faithful, being sustained by pardon, do not despond when they come short of what they ought to be. The Apostle, in the meantime, reminds us that we must fight, in order that we may serve the Lord; for the whole world hinders us to go where the Lord calls us. Then, he only keeps the law who courageously resists the world.

For this is the love of God, that we keep his commandments - This constitutes true love; this furnishes the evidence of it.
And his commandments are not grievous - Greek, "heavy" - βαρεῖαι bareiai; that is, difficult to be borne as a burden. See Matthew 11:30. The meaning is, that his laws are not unreasonable; the duties which he requires are not beyond our ability; his government is not oppressive. It is easy to obey God when the heart is right; and those who endeavor in sincerity to keep his commandments do not complain that they are hard. All complaints of this kind come from those who are not disposed to keep his commandments. Indeed, they object that his laws are unreasonable; that they impose improper restraints; that they are not easily complied with; and that the divine government is one of severity and injustice. But no such complaints come from true Christians. They find his service easier than the service of sin, and the laws of God more mild and easy to be complied with than were those of fashion and honor, which they once endeavored to obey. The service of God is freedom; the service of the world is bondage. No man ever yet heard a true Christian say that the laws of God, requiring him to lead a holy life, were stern and "grievous." But who has not felt this in regard to the inexorable laws of sin? What votary of the world would not say this if he spoke his real sentiments? Compare the notes at John 8:32.

For this is the love of God - This the love of God necessarily produces. It is vain to pretend love to God while we live in opposition to his will.
His commandments - To love him with all our heart, and our neighbor as ourselves, are not grievous - are not burdensome; for no man is burdened with the duties which his own love imposes. The old proverb explains the meaning of the apostle's words, Love feels no loads. Love to God brings strength from God; through his love and his strength, all his commandments are not only easy and light, but pleasant and delightful.
On the love of God, as being the foundation of all religious worship, there is a good saying in Sohar Exod., fol. 23, col. 91: "Rabbi Jesa said, how necessary is it that a man should love the holy blessed God! For he can bring no other worship to God than love; and whoever loves him, and worships him from a principle of love, him the holy blessed God calls his beloved."

(3) For this is the love of God, that we keep his commandments: (4) and his commandments are not (d) grievous.
(3) The reason: to love God, is to keep his commandments, which being so, and seeing that both the loves are commanded by the same lawmaker, (as he taught before) it follows also, that we do not love our neighbours, when we break God's commandments. (4) Because experience teaches us that there is no ability in our flesh, neither will to perform God's commandments, therefore lest the apostle should seem, by so often putting them in mind of the keeping of the commandments of God, to require things that are impossible, he pronounces that the commandments of God are not in any way grievous or burdensome, that we can be oppressed with the burden of them.
(d) To those who are regenerate, that is to say, born again, who are led by the Spirit of God, and are through grace delivered from the curse of the law.

For this is the love of God, that we keep his commandments,.... Keeping of the commandments of God is an evidence of love to God; this shows that love is not in word and tongue, in profession only, but in deed and in truth; and that such persons have a sense of the love of God upon their souls, under the influence of which they act; and such shall have, and may expect to have, greater manifestations of the love of God unto them:
and his commandments are not grievous; heavy, burdensome, and disagreeable; by which are meant, not so much the precepts of the moral law, which through the weakness of the flesh are hard to be kept, and cannot be perfectly fulfilled; though believers indeed, being freed from the rigorous exaction, curse, and condemnation of the law, delight in it after the inward man, and serve it cheerfully with their spirit; and still less the commands of the ceremonial law, which were now abolished, and were grievous to be borne; but rather those of faith in Christ, and love to the saints, 1-John 3:23; or it may be the ordinances of the Gospel, baptism, and the Lord's supper, with others, which though disagreeable to unregenerate persons, who do not care to be under the yoke of Christ, however easy and light it is, yet are not heavy and burdensome to regenerate ones; and especially when they have the love of God shed abroad in them, the presence of God with them, communion with Jesus Christ, and a supply of grace and strength from him; then are these ways ways of pleasantness, and paths of peace, and the tabernacles of the Lord are amiable and lovely.

this is--the love of God consists in this.
not grievous--as so many think them. It is "the way of the transgressor" that "is hard." What makes them to the regenerate "not grievous," is faith which "overcometh the world" (1-John 5:4): in proportion as faith is strong, the grievousness of God's commandments to the rebellious flesh is overcome. The reason why believers feel any degree of irksomeness in God's commandments is, they do not realize fully by faith the privileges of their spiritual life.

For this is the love of God - The only sure proof of it. That we keep his commandments: and his commandments are not grievous - To any that are born of God.