Beloved, let us love one another: for love is of God; and every one that loveth is born of God, and knoweth God.
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1 John 4:5-9
Tyndale Open Study Notes (CC BY-SA 4.0).
4:7-21 John explains the source of a Christian’s love and its outworking.
Other Bible passages linked to this one, most cited first.
He that loveth not knoweth not God; for God is love.
Seeing ye have purified your souls in obeying the truth through the Spirit unto unfeigned love of the brethren, see that ye love one another with a pure heart fervently:
He that loveth his brother abideth in the light, and there is none occasion of stumbling in him.
But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith,
For God hath not given us the spirit of fear; but of power, and of love, and of a sound mind.
But as touching brotherly love ye need not that I write unto you: for ye yourselves are taught of God to love one another. And indeed ye do it toward all the brethren which are in all Macedonia: but we beseech you, brethren, that ye increase more and more;
Authorship: the book itself or Christian tradition. Approximate dates, as in Carson and Moo, An Introduction to the New Testament, and Longman and Dillard, An Introduction to the Old Testament.