Thy Strong Word — 1 John 4:1-21: Love, but Verify

John tackles a crucial question that plagued the early church and still challenges us today: How do we know who truly speaks for God? He provides a surprisingly simple test – the acknowledgment of Jesus Christ coming in the flesh – but then expands into one of Scripture’s most profound revelations about God’s nature as love itself. Through this dual focus on discernment and divine love, John shows how spiritual truth-testing is important for those who are of God but love itself seeks the good of others—even those who are caught up in false teachings.

The Rev. John Lukomski, co-host of Wrestling with the Basics on KFUO Radio, joins the Rev. Dr. Phil Booe to study 1 John 4:1-21. Find Wrestling with the Basics at kfuo.org/WrestlingWithTheBasics.

In these epistles, John defends the truth of Jesus Christ against false teachings, calling believers to remain steadfast in their faith and grounded in the apostolic witness. He emphasizes the essential connection between truth, love, and fellowship, urging Christians to walk in the light, love one another, and reject anything that denies the person and work of Jesus.

Through 1 John, we explore the assurance of salvation, the battle between light and darkness, and the call to abide in Christ. In 2 John, we are reminded of the importance of holding fast to the truth while guarding against deceivers. Finally, in 3 John, we see a personal glimpse into the challenges of church leadership, hospitality, and Christian unity.

Together, these letters challenge us to live faithfully as God’s children in a world that opposes His truth.

Thy Strong Word, hosted by Rev. Dr. Phil Booe, pastor of St. John Lutheran Church of Luverne, MN, reveals the light of our salvation in Christ through study of God’s Word, breaking our darkness with His redeeming light. Each weekday, two pastors fix our eyes on Jesus by considering Holy Scripture, verse by verse, in order to be strengthened in the Word and be equipped to faithfully serve in our daily vocations. Submit comments or questions to: thystrongword@kfuo.org.

Thy Strong Word is graciously underwritten by the Lutheran Heritage Foundation. Through the mission gifts of people like you, LHF translates, publishes, distributes and introduces books that are Bible-based, Christ-centered and Reformation-driven. Learn more at lhfmissions.org.

1 John 4:1-21

Test the Spirits

4 Beloved, do not believe every spirit, but test the spirits to see whether they are from God, for many false prophets have gone out into the world. ²By this you know the Spirit of God: every spirit that confesses that Jesus Christ has come in the flesh is from God, ³and every spirit that does not confess Jesus is not from God. This is the spirit of the antichrist, which you heard was coming and now is in the world already. ⁴Little children, you are from God and have overcome them, for he who is in you is greater than he who is in the world. ⁵They are from the world; therefore they speak from the world, and the world listens to them. ⁶We are from God. Whoever knows God listens to us; whoever is not from God does not listen to us. By this we know the Spirit of truth and the spirit of error.

God Is Love

⁷Beloved, let us love one another, for love is from God, and whoever loves has been born of God and knows God. ⁸Anyone who does not love does not know God, because God is love. ⁹In this the love of God was made manifest among us, that God sent his only Son into the world, so that we might live through him. ¹⁰In this is love, not that we have loved God but that he loved us and sent his Son to be the propitiation for our sins. ¹¹Beloved, if God so loved us, we also ought to love one another. ¹²No one has ever seen God; if we love one another, God abides in us and his love is perfected in us.

¹³By this we know that we abide in him and he in us, because he has given us of his Spirit. ¹⁴And we have seen and testify that the Father has sent his Son to be the Savior of the world. ¹⁵Whoever confesses that Jesus is the Son of God, God abides in him, and he in God. ¹⁶So we have come to know and to believe the love that God has for us. God is love, and whoever abides in love abides in God, and God abides in him. ¹⁷By this is love perfected with us, so that we may have confidence for the day of judgment, because as he is so also are we in this world. ¹⁸There is no fear in love, but perfect love casts out fear. For fear has to do with punishment, and whoever fears has not been perfected in love. ¹⁹We love because he first loved us. ²⁰If anyone says, “I love God,” and hates his brother, he is a liar; for he who does not love his brother whom he has seen cannot^[a] love God whom he has not seen. ²¹And this commandment we have from him: whoever loves God must also love his brother.

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Footnotes

1 John 4:20 Some manuscripts how can he

Rev. Dr. Phil Booe

Native North Carolinian Rev. Dr. Phil Booe serves pastor of St. John Lutheran Church of Luverne, MN, and host of Thy Strong Word on KFUO Radio. His parishioners probably think he can’t teach Bible study without a mug of coffee in his hand, and he’ll always be happy to eat a plate of sushi. When he’s not shepherding his flock or teaching on the radio, you might find him watching bad movies from the 50s, 60s, and 70s, and especially binging RiffTrax and MST3K episodes. Some day he’d love to travel to the Lutheran homeland in Germany, but for now he spends time in Minnesota with his wife, son, daughter, and cat, and looks forward to Holy Week every year.