If a person says, "I love God," yet [in reality] hates his brother, he is a liar. For the person who does not love his brother, whom he has seen, cannot [possibly] love God, whom he has never seen.

Loved ones, we should have love for one another, because love comes from [the very nature of] God, and every person who [continually] loves [others] has been [spiritually] conceived by God [See 2:29; 3:9], and knows [he is in fellowship with] God.

You should not love the [godless] world, nor the things [i.e., the materialistic values] that are part of this [present] age. If any person loves the world, a [genuine] love for the Father is not in his heart.

There is no [reason for] fear if one [really] loves, but a complete love removes fear [from us] because fear produces punishment [i.e., mental anxiety], and the person who is [always] afraid does not have a complete love.

[For] we [can] know that we have passed out of [the realm of spiritual] death and into [spiritual] life, because we [show] love for the brothers [and sisters]. The person who does not love [them] continues to be [spiritually] dead.

Little children [i.e., dear ones], we should not [merely] claim to love [people], or [even just] talk about it, but [we should love] by what we do [for them] in a genuine way.

The person who does not love [others] does not know God [as Savior], for [the very nature of] God is love.

No person has gazed upon God [at any time]; [but] if we love one another, God [continually] lives in our hearts, and His love is made complete within us.

Here is what a complete love will do for us: It will give us boldness in [facing] the judgment day, because the way Jesus acts [regarding love] is the way we should act [while] in this world.

And this is the [greatest] commandment [See Matt. 2:37-38] we have received from Him: [It requires] that the person who [claims to] love God should also love his brother.

This is [one] way we know that we love God's [spiritually reborn] children: [It is] when we love God and obey what He commands us to do.

Here is [the essence of] love: [It is] not that we loved God [first], but that He loved us [See Rom. 5:6-8] and sent His Son to be a "covering over" [i.e., atonement, 2:2] for our sins.

Loved ones, if God loved us that much, we should also love one another.

And we have known [with certainty] and have believed [with assurance] that God has truly loved us. God's [very nature] is love and the person who [continually] loves [Him and others] lives in [fellowship with] God [continually], and God [continually] lives in that person's heart.