1 John study notes

Important Concepts

• Assurance of Life: John writes so believers may know they have eternal life.
• God Is Light: Fellowship with God means walking in the light and confessing sin.
• God Is Love: Those born of God love one another as Christ loved us.
• Belief in Jesus: True faith confesses that Jesus is the Christ come in the flesh.
• Confession and Cleansing: Christ is our propitiation and advocate; confessed sin is forgiven.
• Overcoming the World: Faith in the Son of God gives victory over the world and the evil one.

Practical Application

First John is a gift to every believer who has ever wondered, “Do I really belong to God?” Its great purpose is assurance — “that you may know that you have eternal life” — and it grounds that assurance both in Christ and in the evidences of a changed life. John lovingly holds up three tests by which we can examine ourselves: Do we believe the truth about Jesus, that He is the Christ, the Son of God come in the flesh? Do we walk in the light, confessing our sins and seeking to obey God’s commands? And do we love our fellow believers in deed and truth? These are not conditions we must perfectly meet to earn salvation, but the fruit that genuine faith produces, the marks by which we may recognize the new life within us. When our hearts condemn us, John reminds us that “God is greater than our heart,” that “the blood of Jesus his Son cleanses us from all sin,” and that “if we confess our sins, he is faithful and just to forgive us.” First John thus offers both a searching self-examination and a deep, Christ-centered comfort.

The letter also calls us powerfully to love. Again and again John insists that love for others is inseparable from love for God: “Anyone who does not love does not know God, because God is love.” He defines love not by our feelings but by the cross — “he laid down his life for us” — and calls us to love “not in word or talk but in deed and in truth.” This challenges any faith that is warm toward God but cold toward people. And 1 John calls us to guard the truth about Jesus against the many voices that would distort it, testing every teaching by whether it confesses Christ come in the flesh. In a world of spiritual confusion and half-hearted religion, 1 John summons us to a faith that is real — believing rightly, walking in the light, and loving genuinely — and assures all who so live that they truly know God, are forgiven, abide in Christ, and possess eternal life.

Questions for reflection

1. John writes so we “may know” we have eternal life. Do you have that assurance, and on what is it based?
2. “God is love,” and love for others is inseparable from love for God. How is your love for fellow believers shown “in deed and in truth”?
3. When your heart condemns you, how does 1 John’s teaching on confession, cleansing, and the God who is “greater than our heart” comfort you?