By this it is evident who are the children of God, and who are the children of the devil: whoever does not practice righteousness is not of God, nor is the one who does not love his brother.
English Standard Version (ESV)
This verse doesn't just say that doing good things proves we're God's kids. It reveals a profound truth: a consistent pattern of not practicing righteousness, and a consistent failure to love, are the definitive signs we belong to the devil. It's about a way of life, not isolated actions.
By this it is evident who are the children of God, and who are the children of the devil: whoever does not practice righteousness is not of God, nor is the one who does not love his brother.
English Standard Version (ESV)
John is continuing his argument about genuine faith, contrasting those who truly belong to God with those who belong to the devil. He's already shown that true believers have a new nature that makes them want to do what's right. This verse sharpens that point, stating that a life marked by unrighteousness and a lack of love for fellow believers is the clear indicator that someone is not a child of God.
How can you be sure who truly belongs to God? John cuts through the noise with a clear, practical test.
John isn't talking about a feeling or a profession of faith. He's describing the evidence of belonging to God.
The Two Pillars
These aren't optional extras; they are the very markers that distinguish God's children from the devil's.
Does this mean you have to be perfectly good and always feel warm fuzzies for everyone to be God's child?
Absolutely not! John's point is about the direction and heart attitude, not flawless execution.
The Heart of the Matter
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When these are absent or consistently ignored, it reveals a fundamental disconnect from God's very nature.
Understand the original words
agapē · Greek Noun
To love others with the same selfless, sacrificial love that God has shown; it is a primary evidence of genuine faith and relationship with God.
Jesus also teaches that true believers will be known by their 'fruits,' just as 1 John states we are known by our actions of righteousness and love.
John 13:34-35Jesus commands His followers to love one another, making this a defining mark of discipleship, which directly echoes 1 John's emphasis on loving our brothers.
Romans 8:14This passage speaks of those led by the Spirit of God as His children, aligning with 1 John's idea that genuine children of God will demonstrate it through their way of life.
1 John 2:3-6John explains that claiming to know God means walking in His ways, reinforcing the connection between genuine faith and a life lived in obedience and love for others.
This verse doesn't just say that doing good things proves we're God's kids. It reveals a profound truth: a consistent pattern of not practicing righteousness, and a consistent failure to love, are the definitive signs we belong to the devil. It's about a way of life, not isolated actions.
John is continuing his argument about genuine faith, contrasting those who truly belong to God with those who belong to the devil. He's already shown that true believers have a new nature that makes them want to do what's right. This verse sharpens that point, stating that a life marked by unrighteousness and a lack of love for fellow believers is the clear indicator that someone is not a child of God.
John is continuing his argument about genuine faith, contrasting those who truly belong to God with those who belong to the devil. He's already shown that true believers have a new nature that makes them want to do what's right. This verse sharpens that point, stating that a life marked by unrighteousness and a lack of love for fellow believers is the clear indicator that someone is not a child of God.
"By this it is evident who are the children of God, and who are the children of the devil: whoever does not practice righteousness is not of God, nor is the one who does not love his brother." — This verse doesn't just say that doing good things proves we're God's kids. It reveals a profound truth: a consistent pattern of not practicing righteousness, and a consistent failure to love,…
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Last reviewed October 2026