We have - Faith anticipates the blessings. The petitions which we asked of him - Even before the event. And when the event comes, we know it comes in answer to our prayer.
This extends to things of the greatest importance. If any one see his brother - That is. any man. Sin a sin which is not unto death - That is, any sin but total apostasy from both the power and form of godliness. Let him ask, and God will give him life - Pardon and spiritual life, for that sinner. There is a sin unto death: I do not say that he shall pray for that - That is, let him not pray for it. A sin unto death may likewise mean, one which God has determined to punish with death.
All deviation from perfect holiness is sin; but all sin is not unpardonable.
Yet this gives us no encouragement to sin: on the contrary, it is an indisputable truth, he that is born of God - That sees and loves God. Sinneth not - So long as that loving faith abides in him, he neither speaks nor does anything which God hath forbidden. He keepeth himself - Watching unto prayer. And, while he does this, the wicked one toucheth him not - So as to hurt him.
We know that we are children of God - By the witness and the fruit of his Spirit, 1John 3:24. But the whole world - All who have not his Spirit, not only is "touched" by him, but by idolatry, fraud, violence lasciviousness, impiety, all manner of wickedness. Lieth in the wicked one - Void of life, void of sense. In this short expression the horrible state of the world is painted in the most lively colours; a comment on which we have in the actions, conversations, contracts, quarrels, and friendships of worldly men.
And we know - By all these infallible proofs. That the Son of God is come - Into the world. And he hath given us a spiritual understanding, that we may know him, the true one - "The faithful and true witness." And we are in the true one - As branches in the vine, even in Jesus Christ, the eternal Son of God. This Jesus is the only living and true God, together with the father and the Spirit, and the original fountain of eternal life. So the beginning and the end of the epistle agree.
Keep yourselves from idols - From all worship of false gods, from all worship of images or of any creature, and from every inward idol; from loving, desiring, fearing anything more than God. Seek all help and defence from evil, all happiness in the true God alone.