By this all people will know that you are my disciples, if you have love for one another.”
English Standard Version (ESV)
Jesus states that this mutual love isn't just a nice suggestion, but the primary, definitive "mark" by which the entire world will recognize His true followers. It's not about outward rituals or specific doctrines, but about a tangible, self-sacrificing love that even pagans of the time noted as remarkable.
By this all people will know that you are my disciples, if you have love for one another.”
English Standard Version (ESV)
Just after Judas Iscariot left to betray Jesus, Jesus declared that this moment would bring glory to himself and God. He then told his disciples he would be with them only a little longer, giving them a new commandment: to love one another as he had loved them. This teaching culminates in the statement that this mutual love will be the undeniable sign that they are his disciples.
How do people really know if you're a follower of Jesus? It's not about what you wear or what you say, but something far more profound.
Jesus gives us a clear, undeniable sign in John 13:35: "By this all people will know that you are my disciples, if you have love for one another.”
A Visible Difference
This wasn't just a nice suggestion; it was meant to be the defining characteristic of Jesus' followers. In a world often marked by division and self-interest, radical, selfless love among believers would stand out like a beacon. It’s a love that isn’t just emotional but active, even to the point of sacrifice, mirroring Jesus' own love for us.
More Than Just Affection
The Greek word for love here, 'agape,' speaks of a devoted, unconditional love that seeks the highest good of the other. It's a deliberate choice, a commitment to action, that demonstrates a transformed heart. This outward expression of love is the most powerful testimony to the reality of Christ's work in us.
Jesus called it a 'new' commandment, but wasn't loving your neighbor already in the Old Testament? What makes this different?
In John 13:34, Jesus says, "A new commandment I give to you, that you love one another: just as I have loved you, you also are to love one another."
A Command Rooted in Christ's Example
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While the Old Testament Law commanded love for neighbor, Jesus introduces a new dimension. This isn't just about a general goodwill; it's a love modeled after His own sacrificial love. His disciples are to love as He has loved them – a radical, self-giving love demonstrated through His willingness to lay down His life.
A Love Empowered by the Spirit
This 'newness' also comes from the divine enablement. Under the Old Covenant, fulfilling this command was a human struggle. Under the New Covenant, initiated by Christ's sacrifice, believers are empowered by the Holy Spirit to love in this profound, Christ-like way. It’s a love that flows from a regenerated heart, made possible by God’s own love poured into us.
Understand the original words
mathētēs · Greek Noun
A learner, apprentice, or follower. In the New Testament, it signifies one who has identified with Jesus Christ, committed to His teachings, and aims to imitate His life and character.
Jesus' commandment to love one another, given just hours before his death, wasn't just a suggestion but a radical new identity marker. In a world often defined by rigid laws, creeds, or outward shows, this profound, self-sacrificing love was to be the undeniable, public signature of his followers, demonstrating the very nature of God to a watching world.
c. AD 30— this verse
The Last Supper
Jesus institutes the Lord's Supper and washes his disciples' feet, a profound act of service just before his betrayal and crucifixion.
c. AD 30
Jesus' Crucifixion
Jesus is betrayed, arrested, and crucified, fulfilling his mission to atone for the sins of humanity and demonstrate ultimate love.
c. AD 30-33
The early spread of the Gospel
Following Jesus' resurrection and ascension, the apostles begin to preach the Gospel, and the early church grows.
c. AD 50
Council of Jerusalem
A pivotal council addresses whether Gentile converts must follow Jewish law, affirming that faith in Christ and love are paramount, not strict adherence to ritual.
c. AD 90s
Writing of the Gospel of John
The Apostle John writes his Gospel, emphasizing Jesus' divine nature, his relationship with the Father, and the importance of love within the community of believers.
This passage directly contrasts the children of God and the children of the devil, stating that righteousness and love are the clear markers of belonging to God, echoing John 13:35's theme of a distinguishing mark of discipleship.
Galatians 5:22-23While John 13:35 points to love as an external sign of discipleship, this passage highlights love as a fruit of the Spirit, showing the internal transformation that should lead to that outward expression.
Colossians 3:12-14This passage elaborates on the practical outworking of Christian life, emphasizing putting on virtues like compassion, kindness, and humility, and binding them all together with love, which directly supports the 'love for one another' commanded in John 13:35.
1 Peter 4:8Peter emphasizes that love covers a multitude of sins, reinforcing the idea that genuine, sacrificial love among believers is a powerful testimony, a theme that strongly aligns with Jesus' declaration in John 13:35.
vincentJohn 13:35: "By this shall all men know that ye are my disciples, if ye have love one to another."
Shall - know (γνώσονται)Perceive, or come to know.My disciples (ἐμοὶ μαθηταί)See on Matthew 12:49. Literally, disciples unto me. Compare John 15:8.
calvinJohn 13:30-35: "He then having received the sop went immediately out: and it was night."
- When, therefore, he had received the sop, he went immediately out; and it was night. 31. When, therefore, he was gone out, Jesus said, Now is the Son of man glorified, and God is glorified in him. 32. If God is glorified in him, God will also glorify him in himself, and will immediately glorify him. 33. Little children, but a little while am I yet with you. You shall seek me, and as I said to the Jews,…
Jesus states that this mutual love isn't just a nice suggestion, but the primary, definitive "mark" by which the entire world will recognize His true followers. It's not about outward rituals or specific doctrines, but about a tangible, self-sacrificing love that even pagans of the time noted as remarkable.
Just after Judas Iscariot left to betray Jesus, Jesus declared that this moment would bring glory to himself and God. He then told his disciples he would be with them only a little longer, giving them a new commandment: to love one another as he had loved them. This teaching culminates in the statement that this mutual love will be the undeniable sign that they are his disciples.
Just after Judas Iscariot left to betray Jesus, Jesus declared that this moment would bring glory to himself and God. He then told his disciples he would be with them only a little longer, giving them a new commandment: to love one another as he had loved them. This teaching culminates in the statement that this mutual love will be the undeniable sign that they are his disciples.
"By this all people will know that you are my disciples, if you have love for one another.”" — Jesus states that this mutual love isn't just a nice suggestion, but the primary, definitive "mark" by which the entire world will recognize His true followers. It's not about outward rituals or spec…
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Last reviewed October 2026