God's People Contrasted with The Lawless World (1 John 3:2-6).
Following on his declaration that God has begotten His true people through Christ so that they are His children (tekna - John only uses ‘son' of Christ), John now calls them to Godlikeness. They are to be so in the light of the glorious thing that God will do in them in making them like Christ and like Himself. For to sin is to be lawless, and sin is no part of God, it is against all that He is. Thus it is impossible to dwell in Him and be ‘a sinning one'. It is impossible to be His child and follow the world. None must be deceived. Those who deliberately continue in sin neither see Him (Who is the Light) nor know Him.