The Bible teaches that love is the greatest commandment and the defining mark of Christian discipleship — first directed toward God, then toward neighbor, and even toward enemies. God himself is love, and his love for humanity is the source of all true Christian love.
The Bible's teaching on love is foundational and pervasive. 1 John 4:8 states the most concentrated biblical claim about love: 'God is love.' Not 'God loves' or 'love is godly' — but 'God IS love.' Love is identified with God's essential character. Everything the Bible teaches about love flows from this foundation. Jesus, asked which commandment was the greatest, identified two as the heart of the law (Matthew 22:36-40). The first: 'Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind' (from Deuteronomy 6:5). The second: 'Thou shalt love thy neighbour as thyself' (from Leviticus 19:18). Jesus said: 'On these two commandments hang all the law and the prophets.' All of Christian ethics is the working out of these two loves. The New Testament adds a third dimension: love for enemies. Matthew 5:44 — 'Love your enemies, bless them that curse you, do good to them that hate you.' This is unprecedented in religious teaching of the ancient world. Christ commands love toward those who oppose us — not just tolerance but active blessing. The biblical word translated 'love' in the New Testament is most often agape — self-giving, sacrificial love. Unlike eros (romantic desiring love) or philia (friendship love), agape is not based on the lovableness or response of the object. It gives because giving is what love does. 1 Corinthians 13 — the famous 'love chapter' — defines this love by what it does: 'Charity suffereth long, and is kind; charity envieth not; charity vaunteth not itself, is not puffed up... beareth all things, believeth all things, hopeth all things, endureth all things. Charity never faileth.' Crucially, the Bible roots Christian love in God's prior love. 1 John 4:19 — 'We love him, because he first loved us.' Romans 5:8 — 'God commendeth his love toward us, in that, while we were yet sinners, Christ died for us.' Christian love is not a stoic discipline of willing the good of others; it is a participation in God's own love, made possible because we have first been loved. John 13:34-35 makes love the identifying mark of Christ's disciples: 'A new commandment I give unto you, That ye love one another; as I have loved you, that ye also love one another. By this shall all men know that ye are my disciples, if ye have love one to another.' The visible witness of Christianity is not primarily its institutions, doctrines, or programs — it is the love Christians have for each other. The Bible also addresses specific kinds of love. Ephesians 5:25 commands husbands to love wives 'as Christ also loved the church, and gave himself for it.' 1 Peter 4:8 calls Christians to 'have fervent charity among yourselves: for charity shall cover the multitude of sins.' 1 John 3:16-18 insists that love is not merely verbal: 'Hereby perceive we the love of God, because he laid down his life for us: and we ought to lay down our lives for the brethren... let us not love in word, neither in tongue; but in deed and in truth.'
“Charity suffereth long, and is kind; charity envieth not; charity vaunteth not itself, is not puffed up... Charity never faileth.”
The love chapter
“Thou shalt love the Lord thy God with all thy heart... Thou shalt love thy neighbour as thyself.”
The greatest commandments
“Greater love hath no man than this, that a man lay down his life for his friends.”
“God commendeth his love toward us, in that, while we were yet sinners, Christ died for us.”
“Love your enemies, bless them that curse you, do good to them that hate you.”
If you want to grow in love, do four things. First, receive God's love for you — let yourself believe it before trying to extend it. Second, practice love as action, not just feeling — concrete acts of service, generosity, presence. Third, love within commitment — covenant love (hesed/agape) is far more powerful than fluctuating affection. Fourth, love your enemies in some specific way — pray for one person who has wronged you, bless them in some concrete action, refuse to keep records of their wrongs.
1 Corinthians 13:4-8 gives the most extensive biblical definition: 'Charity suffereth long, and is kind; charity envieth not; charity vaunteth not itself, is not puffed up, Doth not behave itself unseemly, seeketh not her own, is not easily provoked, thinketh no evil; Rejoiceth not in iniquity, but rejoiceth in the truth; Beareth all things, believeth all things, hopeth all things, endureth all things. Charity never faileth.' The definition is by actions, not feelings — love is what love does.
Jesus identified the two greatest commandments as loving God and loving neighbor (Matthew 22:37-40), saying 'on these two commandments hang all the law and the prophets.' Love is greatest because it is the heart from which all other obedience flows. Paul confirms this in Romans 13:10: 'love is the fulfilling of the law.' Without love, no other action has eternal value — 1 Corinthians 13:1-3 says even prophetic speech, faith to move mountains, and giving everything to the poor profit nothing 'and have not charity.'
Matthew 5:44 commands: 'Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you.' This is one of the most distinctive teachings of Jesus. He grounds it in God's own example (Matthew 5:45): God 'maketh his sun to rise on the evil and on the good, and sendeth rain on the just and on the unjust.' Christians are to imitate God by extending love beyond the boundaries of those who deserve or return it.
1 John 4:8 says both — 'He that loveth not knoweth not God; for God is love.' The statement is essential, not merely relational. God's love is not one of his attributes alongside many others; love is identified with his being. This does not mean love is God (as if 'love' were a god) but that to be God is to be the source and substance of love itself. Everything we know about love is rooted in who God is. Romans 5:8 then shows how God's love acts: 'while we were yet sinners, Christ died for us.'