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1 John 2:3-11 - Knowing God by Obedience and Love

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St John has just refused concealment and given sinners Christ the Advocate. Now he presses the next question: what does true knowledge of God look like when the words sound right? The answer is not a cleverer sentence about God. It is keeping His commandments, remaining in Him so that His way becomes our way, and loving the brother in the light already shining.

Knowing God by Keeping His Word (1 John 2:3-6)

3 Now by this we know that we know Him, if we keep His commandments. 4 He who says, “I know Him,” and does not keep His commandments, is a liar, and the truth is not in him. 5 But whoever keeps His word, truly the love of God is perfected in him. By this we know that we are in Him. 6 He who says he abides in Him ought himself also to walk just as He walked.

St John begins with a test of claimed knowledge: “by this we know that we know Him.” The Greek pairs a present assurance with a perfect form of knowing: present confidence looks back to a relationship presented as established and still living.1 Knowledge of God here is not bare information. It is communion whose truth becomes visible when His commandments are kept.

The claim “I know Him” can be spoken with fluency. St John is not impressed by the vocabulary. The one who says he knows God and does not keep His commandments is a liar, and the truth is not in him. The issue is contradiction between confession and conduct. Truth must enter the life, or the claim collapses.

Read apart from 1 John 1:8-2:2, this test could crush a sensitive conscience. St John has already denied sinless self-claims, promised cleansing to those who confess, and given Jesus Christ the righteous as Advocate when anyone sins. Now he says we must keep His commandments. These words stand together. Christ receives the penitent sinner, but He does not bless a divided life. Confession opens the door to healing; obedience is one of the first fruits of that healing. The tests are medicine for self-examination under mercy, not a scorecard for deciding who else has ever known God.

St John then deepens the language from “commandments” to “word.” Whoever keeps His word has the love of God perfected in him. The verb for keep can mean hold fast, observe, or guard; John widens the object from plural commandments to the singular word, so the issue is faithful reception of Christ’s teaching as a whole rather than selective compliance.2 “Perfected” here means brought toward its intended goal, not a claim of sinless arrival. Whether one hears “the love of God” chiefly as God’s love reaching its effect in the believer or as love for God maturing in obedience, the pastoral point is the same: love is not finished while it remains a feeling or a slogan. Love reaches its aim where Christ’s word is kept.3

“By this we know that we are in Him.” Assurance is not manufactured by self-inspection alone. It grows where abiding takes visible form. The next sentence is one of the strongest in the letter: whoever says he abides in Him ought also to walk just as He walked. Abiding is remaining in Christ. Walking is manner of life. The one who claims union with Christ owes a Christ-shaped life.4

Language insight - knowing, keeping, and perfected love

Three terms carry the force of these verses. First, knowing God is relational and tested, not merely correct. Second, keeping moves from commandments to the whole word of Christ. Third, love “perfected” is love brought to its goal in lived fidelity. Together they refuse a Christianity that can speak of communion while leaving obedience optional.

Gems from the Fathers 💎

St Augustine joins commandment and love so that neither collapses into the other. “Let us see whether this same commandment be not called love.”5 He also shows how far love is meant to go: “What is perfection of love? To love even enemies, and love them for this end, that they may be brethren.”6 Walking as Christ walked is therefore not one isolated virtue. It is the life of the Crucified and Risen Lord shaping the Church’s way with God and neighbor. Enemy-love does not erase truthful boundaries or return a harmed person to danger; it refuses hatred as a dwelling place while seeking the other’s good under God’s truth.

The Old and New Commandment (1 John 2:7-8)

7 Brethren, I write no new commandment to you, but an old commandment which you have had from the beginning. The old commandment is the word which you heard from the beginning. 8 Again, a new commandment I write to you, which thing is true in Him and in you, because the darkness is passing away, and the true light is already shining.

St John calls the commandment old because it was heard from the beginning. The Christian faith is not a private spiritual innovation. The commandment belongs to the apostolic message already received. Love of God and neighbor did not begin with novelty; it belongs to the word the Church has heard.

Yet the same commandment is also new because it is true in Him and in you. The darkness is passing away, and the true light is already shining. The present wording holds inaugurated hope: darkness is on the way out, while true light already shines.7 The command to love is old in its source and new in its power. It is fulfilled in Christ, and it becomes visible in those who live in His light.

This protects the Church from two mistakes. We should not chase novelty as if the apostolic commandment had grown stale. We also should not treat the commandment as dead memory. In Christ, the old commandment shines with new life. The newness is Christological realization, continuity fulfilled rather than a better ethic invented to replace Israel’s Scriptures. The Gospel measure is the love of Christ Himself: “as I have loved you” (John 13:34).

St Augustine keeps the paradox intact: “Not another, but the selfsame which he has called old, the same is also new.”8 St John Chrysostom, commenting thematically on the new commandment in John 13, says that Christ “made it new Himself by the manner; therefore He added, ‘As I have loved you.’”9 The newness is the measure and the power of Christ’s own love, now becoming true in His people.

Loving the Brother in the Light (1 John 2:9-11)

9 He who says he is in the light, and hates his brother, is in darkness until now. 10 He who loves his brother abides in the light, and there is no cause for stumbling in him. 11 But he who hates his brother is in darkness and walks in darkness, and does not know where he is going, because the darkness has blinded his eyes.

Now St John makes the test concrete. A person can claim to be in the light and still be in darkness if he hates his brother. “Brother” here first means the concrete person in the Church, the one near enough to wound us, inconvenience us, or expose our lack of love. The letter will keep returning to this demand. The immediate term does not shrink Christian love into insider courtesy alone; perfected love, as Augustine said, presses outward until enemies may become brethren. But St John will not let us escape by loving humanity in the abstract while resenting the person in the next pew.

Hatred is not only a private emotion. It is a posture that blinds. The one who hates walks in darkness and does not know where he is going, because the darkness has blinded his eyes.10 Hatred often feels clear-sighted from the inside. It can dress itself as discernment, zeal for truth, or justified distance. St John names the spiritual cost: the hater loses the very light by which he claims to see.

Love of the brother abides in the light, and there is no cause for stumbling in him. Love removes the snare that hatred sets both for the self and for others. This does not mean every strained relationship is simple. Some wounds require time, repentance, boundaries, wise counsel, or protection. Brotherly love does not require denial of harm, unsafe reconciliation, silence about abuse, or restored trust without repentance and repair. Settled hatred, however, must not become normal inside the Christian heart. To remain in the light is to refuse hatred as a dwelling place and to seek the healing of love.

St Augustine presses the examination inward: “Let each look to his own heart: let him not keep hatred against his brother for any hard word.”11 He is not asking anyone to pretend wounds are nothing. He is calling the Church not to let resentment become home. He also asks, “What so blind as these who hate their brethren?”12 Hatred feels lucid when we are inside it; St John says it darkens the eyes.

Language insight - love, stumbling, and blindness

John’s verbs for loving and hating describe characteristic postures, not one isolated mood. The “cause for stumbling” can mean a snare or offense that trips a person; love clears the path that hatred clutters.13 The blindness of verse 11 is moral and spiritual. The metaphor should never be used to stigmatize those who are physically blind. It names the damaged perception that hatred produces.

The Church’s Voice in Worship ⛪

This passage is heard across broader Coptic Catholic Epistle readings in Great Lent and the Holy Fifty Days, usually nested inside larger ranges rather than as one isolated pericope of 1 John 2:3-11.

On Thursday of the first week of Great Lent the Church reads 1 John 1:8-2:11, and on Tuesday of the third week of Great Lent she reads 1 John 2:1-11.14 Confession, Christ the Advocate, and obedient brother-love stand in one hearing. That liturgical sequence protects the session from moralism: repentance is not complete if it never becomes a kept commandment and a healed relationship.

Thomas Sunday places 1 John 2:7-17 among the Catholic Epistle readings, and Thursday of the second week of the Holy Fifty Days reads 1 John 2:7-10.15 These are partial overlaps. Verses 2:3-6 stand outside the Thomas Sunday range, and verse 11 stands outside the Thursday Holy Fifty reading. The spiritual resonance remains fitting: the true light already shines because Christ is risen, and the commandment to love is heard as Paschal life taking shape in the Church. The lectionary sources confirm the placements; the Paschal interpretation is the Church’s theological hearing of those placements, not a caption printed on the calendar itself.

Spiritual Fruit 🍇

Bring claimed knowledge under the light of a kept word. Notice where “I know God” has become vocabulary, identity, or correct opinion while a clear commandment of Christ is postponed. Name one concrete place of delay—speech, purity, honesty, mercy, reconciliation, prayer—and keep Christ’s word there today, asking Him for the love that obedience trains.

Refuse to separate abiding from walking. If communion language is strong while the manner of life remains self-ruled, the claim of abiding is unfinished. Ask where your steps contradict the way of Christ: haste without patience, service without humility, truth without gentleness, or piety without cost. Bring the contradiction into the confession and cleansing of 1 John 1:8-10, receive again the advocacy of Jesus Christ the righteous in 1 John 2:1-2, and then take the next obedient step. A cleansed conscience is meant to become a changed manner of life, not a quiet settlement with old habits.

Do not let hatred rent space in the heart over a hard word or a real wound. Distinguish grief, fear, anger, trauma, and necessary boundaries from settled hatred. Where resentment has become a story you rehearse, bring it to prayer and, when wise, to confession. Seek the brother’s good under truth without pretending the injury never happened.

Let love clear the path where pride wants a stumbling block. Ask whether your presence in the parish makes it easier or harder for another person to remain near Christ. Withdraw gossip, stop collecting allies against a brother, refuse the pleasure of being right at another’s expense, and practice one concrete mercy toward the person you find difficult.

Receive the old commandment as new light already shining. When love feels stale because you have treated the commandment as memory rather than power, or reduced it to manners, return to Christ. The darkness is passing; the true light already shines. Ask the risen Lord to make the apostolic commandment true in you again—old in faithfulness, new in living force.

Footnotes

  1. Greek text and morphology for 1 John 2:3, including present γινώσκομεν and perfect ἐγνώκαμεν, https://biblehub.com/text/1_john/2-3.htm and https://biblehub.com/greek/1097.htm. ↩

  2. Greek text and morphology for 1 John 2:3, 5, including τηρέω with “commandments” and “word,” https://biblehub.com/text/1_john/2-3.htm, https://biblehub.com/text/1_john/2-5.htm, and https://biblehub.com/greek/5083.htm. ↩

  3. Greek text and morphology for 1 John 2:5, including τετελείωται, https://biblehub.com/text/1_john/2-5.htm and https://biblehub.com/greek/5048.htm. Accessible commentaries differ on whether “the love of God” is chiefly God’s love or love for God; the guide preserves the pastoral force without forcing one controlling genitive reading. ↩

  4. Greek text and morphology for 1 John 2:6, including μένω, ὀφείλει, and περιπατέω, https://biblehub.com/text/1_john/2-6.htm, https://biblehub.com/greek/3306.htm, and https://biblehub.com/greek/4043.htm. ↩

  5. St Augustine, Homily 1 on the First Epistle of John, New Advent, https://www.newadvent.org/fathers/170201.htm. ↩

  6. St Augustine, Homily 1 on the First Epistle of John, New Advent, https://www.newadvent.org/fathers/170201.htm. ↩

  7. Greek text and morphology for 1 John 2:7-8, including old/new commandment language and “the darkness is passing away, and the true light is already shining,” https://biblehub.com/text/1_john/2-7.htm and https://biblehub.com/text/1_john/2-8.htm. ↩

  8. St Augustine, Homily 1 on the First Epistle of John, New Advent, https://www.newadvent.org/fathers/170201.htm. ↩

  9. St John Chrysostom, Homilies on the Gospel of John, Homily 72, thematic comment on John 13:34-35, https://www.ccel.org/ccel/schaff/npnf114.iv.lxxiv.html#iv.lxxiv-p81. ↩

  10. Greek text and morphology for 1 John 2:10-11, including ἀγαπάω, μισέω, and τυφλόω, https://biblehub.com/text/1_john/2-10.htm, https://biblehub.com/text/1_john/2-11.htm, https://biblehub.com/greek/25.htm, and https://biblehub.com/greek/5186.htm. ↩

  11. St Augustine, Homily 1 on the First Epistle of John, New Advent, https://www.newadvent.org/fathers/170201.htm. ↩

  12. St Augustine, Homily 1 on the First Epistle of John, New Advent, https://www.newadvent.org/fathers/170201.htm. ↩

  13. Lexical range of σκάνδαλον as stumbling block, offense, trap, or snare, including 1 John 2:10, https://biblehub.com/greek/4625.htm. ↩

  14. Coptic lectionary placements corroborated by date-resolved pages for Thursday of the first week of Great Lent (1 John 1:8-2:11) and Tuesday of the third week of Great Lent (1 John 2:1-11): https://copticchurch.net/readings?g_year=2026&g_month=02&g_day=19 and https://copticchurch.net/readings?g_year=2026&g_month=03&g_day=03. Civil dates move yearly; the recurring cycle is the point. ↩

  15. Coptic lectionary placements corroborated by date-resolved pages for Thomas Sunday (1 John 2:7-17) and Thursday of the second week of the Holy Fifty Days (1 John 2:7-10): https://copticchurch.net/readings?g_year=2026&g_month=04&g_day=19 and https://copticchurch.net/readings?g_year=2026&g_month=04&g_day=23. These are partial overlaps with the session range. ↩

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