Manna Praxis

1 John: That You May Know

Introduction

Introduction — That You May Know

Today’s Passage: An Overview of the Whole Letter

This is a short letter, only five chapters, and it does not build the way Paul builds. Paul will lay down a premise, hear an objection, and work his way through it to a conclusion. John moves differently. He circles, coming back to the same few tests again and again, each time from a slightly different angle: love one another, confess that Jesus Christ has come in the flesh, walk in the light. Scholars call the style spiraling, but it is closer to the way a pastor talks to people he loves and is worried about, returning to what matters most because he cannot let it go.

As you read, hold this: John wrote so you may know that you have eternal life.

The letter never names its author. The opening gives him away. “That which was from the beginning, which we have heard, which we have seen with our own eyes, which we have gazed upon and touched with our own hands—this is the Word of life” (1:1). Set that beside the opening of John’s Gospel. “In the beginning was the Word… the Word became flesh and made His dwelling among us” (John 1:1, 14). The echo is deliberate. Irenaeus, writing in the late second century, said he heard this from Polycarp, who had heard it from John himself. So the church has received the letter as the work of the same John who wrote the Fourth Gospel, the apostle and beloved disciple, by then an old man writing near the end of a long life spent with these words.

He does not name a city the way Paul names the Ephesians. Ancient testimony places the letter in Ephesus, written to congregations across Asia Minor that John had shepherded for years, and those churches were in crisis. A group that had once belonged to their fellowship had left, and they left teaching that Jesus had not truly come in the flesh, that his humanity was an appearance rather than a reality. This letter exists to treat that wound.

One aim should be named now and then watched all week. Near the close John says plainly why he wrote, “so that you may know that you have eternal life” (5:13). He is not writing so that a believer might wonder harder; he is writing so that a believer may know, and that is exactly how the sentence stands. The tests in this letter do not leave eternal life in doubt, to be won or lost by the outcome. They show what a life that already has it looks like.

The letter’s two words

Two Greek words hold the letter together.

The first is γινώσκω (ginōskō), pronounced ghin-OH-sko. Strong’s G1097. It means to know by experience, the way a person knows someone they have lived alongside for years. This is the verb under 5:13, and it does not name a passing mood but an examinable knowledge that a life belongs to God.

The second is μένω (menō), pronounced MEH-no. Strong’s G3306. It means to remain, to stay put in a relationship rather than pass through it, and John uses this word more often than any other writer in the New Testament. In this letter it names the ongoing life a believer shares with the Father and the Son. If ginōskō is the assurance the letter tests for, menō is the relationship that produces it. Meet them both now, and watch John hold them together for the rest of the week.

The world of the letter

Most scholars date the letter to the 90s AD, late in John’s life and written from Ephesus. The apostolic generation was passing away, and the threat to the churches was no longer only persecution from outside; it had become division from within.

The crisis has a name in modern scholarship, an early form of what later became Gnosticism. In the particular shape it takes in this letter, it looks like something close to docetism, from the Greek dokeō, “to seem”: the claim that Jesus only seemed to have a real body, and that his suffering and death were no more than an appearance. Others taught instead that “the Christ,” a divine power, had temporarily come upon the man Jesus and then left him before the crucifixion, so that only the man died. Both versions denied the same two things, a real incarnation and a real atoning death.

If Jesus did not take on flesh, he did not suffer for sin. If he did not suffer for sin, the atonement is an illusion. That is why an aging apostle picked up his pen one more time.

A few threads run the whole way through. There are the tests of life, repeated from more than one angle: righteous living, love for other believers, and right belief about who Jesus is. John does not move through these once and set them aside; he circles back to all three, because a real assurance has to hold up under more than one kind of scrutiny. There is the image of light and darkness that opens the letter (1:5). There is the family language, “little children” and “beloved,” the voice of a pastor near the end of his life. And underneath all of it lies John’s Gospel, returned to now through the lens of a particular crisis.

The map

The two verses the letter stands on

If this letter has a beating heart, it beats here.

"We proclaim to you what we have seen and heard, so that you also may have fellowship with us. And this fellowship of ours is with the Father and with His Son, Jesus Christ." 1 John 1:3 (BSB)

Fellowship, not mere information, is the goal. What the apostles saw and heard, they proclaim so that others may come to share in it, a real and living fellowship with the Father and with His Son.

"I have written these things to you who believe in the name of the Son of God, so that you may know that you have eternal life." 1 John 5:13 (BSB)

Fellowship with God is the goal. Knowing you have it is why John kept writing. His Gospel had already named the first step.

"But these are written so that you may believe that Jesus is the Christ, the Son of God, and that by believing you may have life in His name." John 20:31 (BSB)

The Gospel calls a reader to believe. This letter reassures a believer that they already have the life the Gospel promised. The whole letter exists to move a reader from wondering to knowing.