The First Epistle of John elegantly explains the basic truths about the Christian life. This is an epistle full of deep metaphorical concepts, such as light-darkness, love, true life, false life, Christ, antichrist, etc.
| Author | John, the Apostle |
| For whom it was written | Undetermined. |
| Chapter amount | 5 |
| Verse amount | 105 |
| 1 | God became flesh in human form. God is light. Those who do not walk in the light do not have fellowship with Him. |
| 2 | The life of righteousness. Walking in the light. Observing the commandments. Brotherly love, separation from the world. Warning against the spirit of the antichrist. |
| 3 - 4.6 | The life of the children of God. Righteousness, love, and belief. |
| 4.7 - 21 | The source of love. God is love. We must love God and our brothers. |
| 5.1 - 5 | The triumph of righteousness. |
| 5.6 - 12 | The guarantee of eternal life. |
| 5.13 - 21 | Christian certainty. |