God’s desire for every believer is clear and settled: that ye may know. Those four words capture the heart of the entire letter of 1 John. The apostle does not leave the child of God guessing, hoping, or crossing fingers about eternal life. He writes so that those who believe on the name of the Son of God may know they possess it. Assurance is not a luxury for a few strong Christians. It is the gift God intends for every person who has trusted Jesus Christ.
Throughout the letter John has already pointed to the evidences that mark genuine spiritual life: walking in the light, confessing sin, obeying God’s commands, rejecting the world, loving the brethren, and holding fast to the truth about who Jesus is. Now, as he draws his argument to its close, he brings everything down to one foundational reality. Do you have the Son? The answer to that question settles the matter of eternal life.
Believe in the Son Who Overcomes (1 John 5:1-5)
John begins where Christianity itself must begin. “Whosoever believeth that Jesus is the Christ is born of God: and every one that loveth him that begat loveth him also that is begotten of him.” Faith in Jesus as the Christ, the Messiah sent by God, is the doorway into the family of God. Nothing else opens that door. Church attendance does not make a person a Christian. Baptism does not make a person a Christian. Good works, political convictions, or religious language do not make a person a Christian. Only Jesus Christ does.
Because the believer is born of God, a new family relationship exists. God is Father. The Holy Spirit enables the child of God to cry, “Abba, Father.” That same new birth also produces love for others who have been born of Him. John ties the two together: we know we love the children of God when we love God and keep His commandments. Love for God is never abstract. It shows itself in a willingness to take His Word seriously. “For this is the love of God, that we keep his commandments: and his commandments are not grievous.”
The commandments of God are not a burden to the one who has been born again. They are not always easy, but they are never oppressive to a heart that truly belongs to Christ. The same faith that brings a person into God’s family also enables that person to overcome the world. “For whatsoever is born of God overcometh the world: and this is the victory that overcometh the world, even our faith. Who is he that overcometh the world, but he that believeth that Jesus is the Son of God?”
Victory does not come from extraordinary willpower, endless self-help, or surrounding ourselves with the right people. Those things may have their place, yet the real strength is found in connection to Christ. The believer stands because he is rooted in the One who has already overcome. Faith in Jesus for salvation is the foundation. Faith in Jesus for every storm of life is the daily expression of that same trust.
Receive the Record God Has Given (1 John 5:6-10)
John now moves from the believer’s faith to the testimony that makes faith reasonable. “This is he that came by water and blood, even Jesus Christ; not by water only, but by water and blood. And it is the Spirit that beareth witness, because the Spirit is truth.” Jesus came in real humanity and gave His life in real sacrifice. The Holy Spirit bears witness to Him. One clear mark of the Spirit’s work is that He points people to Christ rather than drawing attention to Himself.
John continues, “For there are three that bear record in heaven, the Father, the Word, and the Holy Ghost: and these three are one. And there are three that bear witness in earth, the Spirit, and the water, and the blood: and these three agree in one.” The testimony of God is greater than the testimony of men. Ordinary life runs on human testimony every day. We board planes, take medicine, and trust bank records because we accept the word of people we consider reliable. How much more should we receive the record God has given concerning His Son?
To refuse that record is not a matter of personal preference. It is to treat God as a liar. God has already spoken clearly about Jesus. He has revealed Himself in creation, in history, in Scripture, and supremely in the person and work of His Son. He owes no one further proof. The evidence is already sufficient. The question is whether we will receive the witness God has already provided.
Rest in the Life God Has Promised (1 John 5:11-13)
The apostle now brings the argument to its simple and powerful conclusion. “And this is the record, that God hath given to us eternal life, and this life is in his Son. He that hath the Son hath life; and he that hath not the Son of God hath not life.” Eternal life is a gift, not a wage. It is not a trophy awarded at the end of a well-lived life. It is the free gift of God given to everyone who has the Son.
That life is eternal in duration and Christ-like in quality. It is found nowhere else. Not in a church, a denomination, baptism, membership, or a personal decision to turn over a new leaf. Salvation produces a fresh start, but a fresh start is not salvation. The decisive question remains: Do you have the Son?
John states his purpose with unmistakable clarity: “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.” The goal is knowledge, not perpetual doubt. Feelings rise and fall. Circumstances change. Spiritual strength varies from day to day. God’s record does not change. “He that hath the Son hath life.”
There is a difference between healthy conviction over sin and crushing condemnation. Genuine salvation produces genuine change, and chronic patterns of sin should cause a person to examine himself carefully. Yet once a person has trusted Christ, the roots of that life are secure in Him. Assurance does not rest on how well we performed this week. It rests on the unchanging record of God.
Conclusion
The message of 1 John 5 is straightforward. Believe in the Son who overcomes the world. Receive the record God has given about His Son. Rest in the eternal life God has promised to everyone who has the Son. Your feelings may shift. Your circumstances will certainly change. Your strength will falter. Jesus Christ remains the same yesterday, and to day, and for ever. He is eternal life.
Do you have the Son? If you do, you can know that you have eternal life. If any lingering doubt remains, bring it to the clear testimony of Scripture and settle the matter today by simple faith in what Christ has already done. Then rest your assurance not on your fluctuating emotions but on the faithful record of God.
