31 What marvelous love the Father has extended to us! Just look at it - we're called children of God! That's who we really are. But that's also why the world doesn't recognize us or take us seriously, because it has no idea who he is or what he's up to. 2 But friends, that's exactly who we are: children of God. And that's only the beginning. Who knows how we'll end up! What we know is that when Christ is openly revealed, we'll see him - and in seeing him, become like him. 3 All of us who look forward to his Coming stay ready, with the glistening purity of Jesus' life as a model for our own.

4 All who indulge in a sinful life are dangerously lawless, for sin is a major disruption of God's order. 5 Surely you know that Christ showed up in order to get rid of sin. There is no sin in him, and sin is not part of his program. 6 No one who lives deeply in Christ makes a practice of sin. None of those who do practice sin have taken a good look at Christ. They've got him all backwards.

Matthew Henry's Commentary on 1 John 3:1-6

Commentary on 1 John 3:1-2

(Read 1 John 3:1-2)

Little does the world know of the happiness of the real followers of Christ. Little does the world think that these poor, humble, despised ones, are favourites of God, and will dwell in heaven. Let the followers of Christ be content with hard fare here, since they are in a land of strangers, where their Lord was so badly treated before them. The sons of God must walk by faith, and live by hope. They may well wait in faith, hope, and earnest desire, for the revelation of the Lord Jesus. The sons of God will be known, and be made manifest by likeness to their Head. They shall be transformed into the same image, by their view of him.

Commentary on 1 John 3:3-10

(Read 1 John 3:3-10)

The sons of God know that their Lord is of purer eyes than to allow any thing unholy and impure to dwell with him. It is the hope of hypocrites, not of the sons of God, that makes allowance for gratifying impure desires and lusts. May we be followers of him as his dear children, thus show our sense of his unspeakable mercy, and express that obedient, grateful, humble mind which becomes us. Sin is the rejecting the Divine law. In him, that is, in Christ, was no sin. All the sinless weaknesses that were consequences of the fall, he took; that is, all those infirmities of mind or body which subject man to suffering, and expose him to temptation. But our moral infirmities, our proneness to sin, he had not. He that abides in Christ, continues not in the practice of sin. Renouncing sin is the great proof of spiritual union with, continuance in, and saving knowledge of the Lord Christ. Beware of self-deceit. He that doeth righteousness is righteous, and to be a follower of Christ, shows an interest by faith in his obedience and sufferings. But a man cannot act like the devil, and at the same time be a disciple of Christ Jesus. Let us not serve or indulge what the Son of God came to destroy. To be born of God is to be inwardly renewed by the power of the Spirit of God. Renewing grace is an abiding principle. Religion is not an art, a matter of dexterity and skill, but a new nature. And the regenerate person cannot sin as he did before he was born of God, and as others do who are not born again. There is that light in his mind, which shows him the evil and malignity of sin. There is that bias upon his heart, which disposes him to loathe and hate sin. There is the spiritual principle that opposes sinful acts. And there is repentance for sin, if committed. It goes against him to sin with forethought. The children of God and the children of the devil have their distinct characters. The seed of the serpent are known by neglect of religion, and by their hating real Christians. He only is righteous before God, as a justified believer, who is taught and disposed to righteousness by the Holy Spirit. In this the children of God are manifest, and the children of the devil. May all professors of the gospel lay these truths to heart, and try themselves by them.