As we reach the final verses of 1 John, the apostle brings the letter to a close with a clear call: live like you know. Throughout this epistle John has set before us the great certainties of the Christian faith. God is light. God is love. Fellowship with God requires walking in the light, confessing sin, and obeying His commandments. Loving the brethren appears again and again. Discernment against false teachers is essential. Victory over the world is promised. Above all, John keeps returning to Jesus Christ, who He is and what He has done. Truth and error are separated by our view of the person and work of the Son of God.
In verse 13 John states the purpose of the letter: “These things have I written unto you that believe on the name of the Son of God; that ye may know that ye have eternal life, and that ye may believe on the name of the Son of God.” Assurance of eternal life is not meant to leave us unchanged. John does not want believers spending their lives wondering whether they possess it. Feelings and memories of a past decision have their place, yet more important are the day-by-day evidences of the Lord’s work in our hearts and lives. He that hath the Son hath life. He that hath not the Son of God hath not life. If we have the Son, that reality must change how we live.
John moves us in three directions. He directs our gaze upward to God and to the Lord Jesus Christ. He turns our eyes around to our brothers and sisters in Christ, for we cannot claim to love the God we cannot see while refusing to love the brother or sister we can see. Finally he turns us inward to examine our own hearts. If we have eternal life, we ought to live like we know it.
Pray With Confidence in God’s Will (vs. 14-15)
Knowing that we have eternal life should transform the way we approach God in prayer. John writes, “And this is the confidence that we have in him, that, if we ask any thing according to his will, he heareth us: And if we know that he hear us, whatsoever we ask, we know that we have the petitions that we desired of him.”
In many religions people approach a deity hoping to gain attention through the right sacrifice or the correct form of words. The Christian does not pray that way. Jesus already cares for His own. We come as children into the throne room of our heavenly Father. We do not knock timidly or arrive bearing gifts to calm His anger. The wrath of God was dealt with at the cross. We belong there. We go home to sit in the lap of the Father who loves us and gave His Son for us.
Yet this confidence is never the confidence that we can bend God to our will. It is the confidence that we can entrust our requests to His will. The phrase “according to his will” does not weaken prayer. God’s will is what makes prayer safe. Imagine the ruin that would follow if the Lord always gave us everything we asked. Children would be destroyed by unlimited indulgence. Adults would be crushed by the weight of their own short-sighted desires. The heart is desperately wicked. We cannot see tomorrow or the full chain of consequences. God can. He sees every moving part.
Jesus Himself prayed in Gethsemane, “Nevertheless not my will, but thine, be done.” Had that cup passed from Him, none of us would be saved. The security of a child is not that the father always says yes. The security is that the father loves the child and will do what is best. Our heavenly Father will not withhold His best from us, yet He will withhold the things that would harm us. We pray with confidence because we know we are His children, and we submit because we trust His wisdom more than our own.
If you are not yet a child of God, the one prayer Scripture promises He will hear is the prayer of repentance and faith: “Lord, I know that I am a sinner. I know that Your Son died in my place. I trust You as my Saviour. Forgive my sins and be my Saviour.” Any other prayer lacks the promise attached to those who already belong to Him.
Care Enough to Pray for a Sinning Brother (vs. 16-17)
John now turns from our relationship with God to our relationship with one another. “If any man see his brother sin a sin which is not unto death, he shall ask, and he shall give him life for them that sin not unto death. There is a sin unto death: I do not say that he shall pray for it. All unrighteousness is sin: and there is a sin not unto death.”
If you belong to a local church you will eventually see brothers and sisters sin. John’s instruction is striking. He does not say see it and discuss it. He does not say broadcast it. He says pray. When you see a brother or sister walking in sin that is not unto death, ask, and God will give life.
The expression “a sin unto death” has troubled many. Some have wrongly concluded that a particular sin can cause the loss of salvation. That cannot be. Jesus declared that no one can pluck His sheep from His hand. Eternal life is everlasting. The most natural reading in context is physical death as the severe end of divine chastening. The New Testament records cases where persistent sin brought sickness and even death among God’s people (1 Corinthians 11; Acts 5). Sin always kills something. Sometimes the consequence reaches the ultimate physical limit.
Yet John does not want us to become fascinated with defining the precise boundaries of that sin. The real question is clearer: what should I do when I see my brother or sister heading deeper into sin? The answer is that we must care enough to pray. Our desire ought to be restoration. Churches can easily become places where people become spectators of one another’s failures rather than intercessors for one another’s recovery.
Jesus Himself modelled this care. Moments before Peter’s denial He said, “Simon, Simon, behold, Satan hath desired to have you, that he may sift you as wheat: But I have prayed for thee, that thy faith fail not.” We are in a spiritual battle. When a believer opens the door through unrepentant sin, the enemy finds an opportunity. We ought to rebuke in the right spirit when needed, yet we must also get on our knees. Do you love another believer’s spiritual condition enough to intercede?
Guard Your Life From the World’s Substitutes (vs. 18-21)
John closes with three strong declarations of what we know. “We know that whosoever is born of God sinneth not; but he that is begotten of God keepeth himself, and that wicked one toucheth him not. And we know that we are of God, and the whole world lieth in wickedness. And we know that the Son of God is come, and hath given us an understanding, that we may know him that is true, and we are in him that is true, even in his Son Jesus Christ. This is the true God, and eternal life. Little children, keep yourselves from idols. Amen.”
The new birth changes our relationship with sin. Sin may still be present, yet it is no longer the settled pattern and master of the believer’s life. The one born of God keeps himself, and the wicked one does not find the free access he seeks.
We know where we belong. We are of God; the whole world lies in wickedness. We know whom we believe. The Son of God has come and has given us understanding so that we may know Him who is true. We are in Him who is true, even in His Son Jesus Christ. This is the true God and eternal life.
Why then the abrupt final command: “Little children, keep yourselves from idols”? An idol is any substitute that promises what only God can give. God offers security; money answers, “Find it in me.” God offers identity; career replies, “Find it in me.” God offers satisfaction; a secret habit claims the same. God offers a secure future; the world multiplies its alternatives. Career, money, children, comfort, technology, entertainment, and above all the self can quietly take the place that belongs to Christ alone.
Every substitute eventually disappoints. It tries to deliver God’s benefits without being God. It lacks the power to carry the weight of our worship and leaves us broken. Knowing who Jesus is, what He has done, and the eternal life He has given, why would we trade the real for a cheap imitation? As you have received Christ Jesus the Lord, so walk ye in Him.
Conclusion
These things were written so that those who believe on the name of the Son of God may know that they have eternal life. That knowledge is meant to produce a certain kind of living. We pray with confidence, submitting to the Father’s wise and loving will. We care enough about our brothers and sisters to intercede when we see them drifting into sin. We keep ourselves from the world’s substitutes, refusing every idol that offers what only Christ can supply.
If you know that you have eternal life, live like you know it. If any doubt remains, the same Scriptures that give assurance also show the way of salvation. Trust the Son of God today. He is the true God and eternal life.
