1 John 4:13–21
One of the greatest privileges of preaching through a book of the Bible is seeing themes repeated until they become impossible to ignore. As I prepared this passage, one truth kept jumping off the page. John is not simply telling us to love. He is reminding us who we are because of God’s love.
Our actions are always shaped by our identity.
If we believe we are rejected, we often live like we are rejected.
If we believe we must earn God’s acceptance, we spend our lives striving.
But when we understand who we are in Christ, everything changes.
Consider just a few of the blessings that belong to every believer.
Through Christ we are forgiven.
Through Christ we have eternal life.
Through Christ we are children of God.
Through Christ we have peace with God.
Through Christ we are declared righteous.
Through Christ we are secure forever.
Through Christ we are loved by God.
What an incredible list! None of these blessings were earned. Every one of them was purchased because “the Father has sent His Son to be the Savior of the world” (1 John 4:14).
When we understand who we are in Christ, loving others is no longer something we merely try to do. It becomes the natural overflow of what God has already done in us.
That is the power of God’s love.
The Holy Spirit Gives Assurance That We Belong to God
John begins by saying,
“By this we know that we abide in him and he in us, because he has given us of his Spirit” (v. 13).
Throughout this letter John repeatedly uses the phrase “by this we know.” He wants believers to have assurance rather than uncertainty.
One of the great evidences of genuine salvation is the presence of the Holy Spirit.
The Spirit regenerates us.
The Spirit convicts us.
The Spirit teaches us.
The Spirit produces holiness.
The Spirit enables us to love.
Love is not merely a personality trait. It is one of the clearest evidences that God’s Spirit is at work within His people.
John then reminds his readers of the testimony he personally witnessed.
“We have seen and testify that the Father has sent his Son to be the Savior of the world” (v. 14).
Unlike us, John physically walked with Jesus. He saw His miracles. He heard His teaching. He witnessed His death and resurrection. His testimony is not speculation—it is eyewitness truth.
Throughout this letter John has repeatedly shown us everything the Father accomplished through His Son.
Jesus is the Word of Life.
He brings eternal life.
His blood cleanses us from all sin.
He is our Advocate before the Father.
He is the propitiation for our sins.
He destroys the works of the devil.
He makes the new birth possible.
He demonstrates God’s love.
He gives eternal life.
Everything God has accomplished for our salvation has been accomplished through Jesus Christ.
No wonder John can write,
“We have come to know and to believe the love that God has for us” (v. 16).
God’s love is not wishful thinking.
It is historical reality.
It was demonstrated at Calvary.
God’s Perfect Love Gives Confidence Instead of Fear
John continues,
“By this is love perfected with us, so that we may have confidence for the day of judgment” (v. 17).
Many people think about judgment with fear.
John says believers can think about judgment with confidence.
Why?
Because we stand before God clothed in the righteousness of Jesus Christ.
Our confidence is not found in our performance.
It is found in Christ’s perfection.
Because we abide in Him and He abides in us, we stand accepted before the Father.
John MacArthur summarizes this beautifully by explaining that God treats believers with the same acceptance He has for His own Son because we are united with Christ. One day we will stand before God’s throne, not in our own righteousness, but in His.
That truth leads directly into one of the most comforting verses in all of Scripture.
“There is no fear in love, but perfect love casts out fear” (v. 18).
John is not saying Christians never experience anxiety or worry.
He is speaking specifically about the fear of God’s judgment.
Fear anticipates punishment.
But those whose sins have been fully forgiven no longer have to fear condemnation.
Jesus has already borne God’s judgment on our behalf.
The wrath we deserved was poured out upon Christ.
Therefore, we do not await judgment with terror.
We await Christ with joyful expectation.
Perfect love drives out the fear of condemnation because Christ has already satisfied divine justice.
Our Love for Others Reveals Our Love for God
John concludes with another searching test.
“We love because he first loved us” (v. 19).
Everything begins with God.
Our love is always a response.
We do not initiate the relationship.
God did.
We love because He loved us first.
John then makes one of the strongest statements in the entire letter.
“If anyone says, ‘I love God,’ and hates his brother, he is a liar” (v. 20).
Those words leave little room for misunderstanding.
Love for God cannot exist alongside persistent hatred for fellow believers.
John Stott wisely observed that loving visible people should be easier than claiming to love the invisible God. If we fail to love those standing in front of us, our profession of loving God rings hollow.
John has repeated this truth throughout his letter because it is one of the clearest evidences of genuine faith.
Biblical love is not merely words.
It is not simply good intentions.
It is love expressed “in deed and in truth.”
We demonstrate our love by serving one another.
By forgiving one another.
By praying for one another.
By encouraging one another.
By bearing one another’s burdens.
This command is rooted in the teaching of Jesus Himself.
On the night before His crucifixion, after washing His disciples’ feet, Jesus said,
“Love one another. Just as I have loved you, you also are to love one another.”
Our love should always resemble His.
Jesus loved the undeserving.
He welcomed the outcast.
He forgave sinners.
He showed mercy to His enemies.
Ultimately, He demonstrated perfect love by laying down His life at the cross.
When John commands believers to love one another, he is calling us to that same cross-shaped love—a love that sacrifices, forgives, serves, and seeks the good of others.
Our profession of faith becomes visible through the way we treat God’s people.
Head — What We Must Know
Because God has given us His Spirit and sent His Son to be the Savior of the world, believers can know with confidence that they belong to Him. Our assurance rests not in our feelings or our performance but in the finished work of Christ. His perfect love removes our fear of judgment and gives us confidence because we stand clothed in His righteousness.
Heart — What We Must Feel
This passage should fill our hearts with deep assurance and overwhelming gratitude. God’s love displayed through Jesus Christ removes the fear of condemnation and replaces it with confident hope. As we meditate on the greatness of His love, our hearts should naturally overflow with love for those around us.
Hands — What We Must Do
Spend time this week meditating on your identity in Christ. Remind yourself daily of what God says is true about you because of the gospel. Thank Him for His grace and let His promises quiet every fear of condemnation.
Examine your relationships honestly. Is there someone toward whom you are harboring bitterness, resentment, or unforgiveness? Ask God for the grace to pursue reconciliation. The love Christ has shown you is greater than any offense another believer has committed against you.
Choose one practical way to love another believer this week. Encourage someone who is discouraged. Pray with someone who is hurting. Meet a tangible need. Replace good intentions with Christlike action.
Pray for someone who is difficult to love. Ask the Holy Spirit to help you see them as Christ sees them and to love them as Christ has loved you.
Share your testimony with someone this week. Tell them how God’s love has changed your life and how Christ became your Savior.
Finally, live each day with confidence instead of fear. When guilt or condemnation seeks to overwhelm your heart, remember that Christ has already satisfied God’s judgment on your behalf. Rest in His finished work and let His perfect love be seen through your life.
Conclusion
Every person longs for assurance.
People spend their lives searching for security in success, relationships, possessions, or achievements, yet none of those things can provide lasting confidence because they cannot remove our greatest problem—our sin before a holy God.
John points us to the only place where true assurance can be found.
God has sent His Son to be the Savior of the world.
Those who confess Jesus Christ as the Son of God, trust in His finished work, and abide in Him no longer need to fear the coming judgment. Christ has already borne the punishment we deserved. His perfect love has cast out our fear because His perfect sacrifice has satisfied God’s justice.
But John reminds us that assurance is never meant to remain hidden within us. The love we have received from Christ should overflow into the lives of others. A believer who knows the love of God will increasingly display the love of God.
So the question is not merely, “Do I say that I love God?”
The greater question is, “Can others see His love through me?”
If you have never trusted Christ, come to Him today. The Savior who loved you enough to die for your sins offers forgiveness, eternal life, and peace with God.
And if you belong to Him, abide in His love, rest confidently in His finished work, and let His love become visible through the way you love His people.
For we love because He first loved us.
If I were putting this into your 1 John book, I’d probably title it “The Power of Love” or “Perfect Love Casts Out Fear.” The latter ties directly to the central theme of the passage, while “The Power of Love” captures the broader movement from assurance, to confidence, to loving others.
