Testing the Spirits and Resting in God’s Love

Cain, Abel, and the Hatred of the World

John has just brought Cain and Abel into his contrast between God's children and those who oppose them (1 John 3:11–15). Cain hated his brother and killed him because his own deeds were evil and Abel's righteous. That story reaches back to the enmity announced in Genesis 3:15. The hatred John describes in his own day did not appear out of nowhere.

Christ's followers were facing people who believed they served God while resisting the Son He sent. The opposition was real, and so was the temptation to listen to someone who sounded authoritative or religious. Chapter 3 grounds the believer's life in the seed God has given; chapter 4 now tells them to examine the voices trying to draw them away from that life.

Test the Spirits

John does not tell his readers to believe every spiritual claim. He tells them to test the spirits because many false prophets had gone out into the world. Israel's Scriptures had already shown what a lying spirit could do through prophets. In 1 Kings 22, Micaiah told Ahab that a lying spirit was in the mouths of his prophets while disaster was approaching. That is a striking picture of a people reassured by false voices when they most needed the truth. A religious voice is not trustworthy merely because it sounds spiritual.

Micaiah also described Yahweh enthroned among the host of heaven. The scene opens a window on His divine council and the spiritual reality behind the lying prophets. John's warning about spirits was not a reason to dismiss that realm. It was a reason to test every claim against the truth God has made known in His Son.

John gives a direct test for the danger in front of his readers: every spirit that confesses Jesus Christ has come in the flesh is from God, and every spirit that does not confess Jesus is not from God (1 John 4:2–3). Christ is the Messiah. The apostles witnessed that He truly came among them. Those who rejected Jesus as the Messiah also rejected the Son whom the Father had sent.

John says the spirit of antichrist was already in the world. That matches his warning in chapter 2, where he calls it the last hour and points to antichrists who had already come. His readers were facing first-century opposition and false teaching, not waiting for us to invent a distant setting for their warning.

Jesus had warned of false prophets and of Jerusalem's coming desolation (Matthew 24; Luke 21). The people John addressed lived in that approaching crisis. To deny that Jesus was their Messiah who came in the flesh was not a harmless disagreement. It meant refusing the Son even while claiming to honor His Father.

They had overcome those teachers because the One in them is greater than the one in the world (1 John 4:4). The world listened to the false teachers; those who knew God listened to the apostolic witness. John was giving his readers a way to recognize truth amid deception.

God Loved Us First

John then turns to the source of the love he has been urging believers to express: “love is from God” (1 John 4:7). He does not say we produce it and offer it to God to win His acceptance. God is love, and He has made His love known by sending His Son so that we might live through Him (1 John 4:8–9).

“In this is love,” John says, “not that we have loved God but that he loved us and sent his Son to be the propitiation for our sins” (1 John 4:10). That is the order. Christ dealt with our sin. God gave His life and love to us. Now we can love one another. The command has power because it rests on a gift, not on an attempt to work up enough love to become God's children.

John says that no one has seen God, but if we love one another, God abides in us and His love is perfected in us (1 John 4:12). He has given us His Spirit. We know He abides in us because He has done something in us that our old efforts under the Law never could.

Confessing the Son and Abiding in God

The apostles saw and testified that the Father sent His Son to be the Savior of the world (1 John 4:14). John says that whoever confesses Jesus is the Son of God has God abiding in him, and he in God. This confession is no empty formula. It is the truth about the Messiah whom false teachers were rejecting.

We have come to know and believe the love God has for us. “God is love,” John says again, “and whoever abides in love abides in God, and God abides in him” (1 John 4:16). This is why love and truth cannot be separated in his letter. God's love is revealed in the Son. His people are made alive through Him, and that love is expressed among brothers and sisters who share His life.

The new creation cannot be undone. God does not make someone alive in Christ and then leave them to become unborn because their feelings falter or a day goes badly. Born of God and Called to Love shows how John grounded that assurance in the seed of God that remains.

Perfect Love Casts Out Fear

John draws his conclusion: God's love is perfected with us so that we may have confidence for the day of judgment (1 John 4:17). “There is no fear in love, but perfect love casts out fear. For fear has to do with punishment” (1 John 4:18). God is not preparing to punish the people Christ has cleansed and made His own. Jesus paid the penalty for sin. A believer may be disciplined and taught, but punishment for sin is not waiting to undo Christ's work.

We love because He first loved us (1 John 4:19). That is not a slogan to admire and then set aside while trying to manufacture love through pressure. It is the reason love can flow from a person who has received God's life. Does God Punish Christians? develops why suffering and the Father's discipline should not be mistaken for the penalty Christ has already borne.

Love Your Brother from the Life You Have

John will not let someone claim love for the unseen God while hating a brother he can see (1 John 4:20–21). He was speaking into a divided first-century world in which some opposed believers while claiming the Father. Love for God's children belongs to the life God has given; hatred belongs to the darkness John has been exposing throughout the letter.

He is not saying that a born-again person loses salvation on a day when warm feelings are hard to find. He is not putting believers under a new rule that makes fellowship rise and fall with their performance. Christ reconciled us. The Spirit lives in us. We can express the love we have been given without trying to earn another measure of God's favor. You cannot fence in the freedom of God's grace with a new set of rules.

You are free to love your brothers and sisters because you belong to Christ. Fear of punishment does not have to drive you. God has given you His love, and He is not taking back the life He gave. The final chapter brings that confidence into faith, prayer, and the testimony that eternal life is in His Son.