And here is how we can be assured that we know Jesus [i.e., that we are saved]: [It is] by obeying what He commands us.

Here is how the children of God and the children of the devil can be recognized: All those who do not continue to do what is right do not belong to God. Also, the person who does not continue to love his brother [or sister does not belong to God].

Here is how we can know what genuine love really is: It was [demonstrated by] Jesus laying down His life [on the cross] for us. And [because of that] we [too] should [be willing to] lay down our lives for [the sake of helping] our brothers [and sisters].

And God lives in the heart of the person who [continually] obeys His commands, and he lives in [fellowship with] God. And here is [another] way we know that God lives in our hearts: It is by [means of] the Holy Spirit, whom God gave to us. [See Rom. 8:9, 11; James 4:5; I Cor. 6:19].

Here is how to know [who is speaking from] the Holy Spirit of God: Every spirit [i.e., person] who proclaims that Jesus Christ has come [to earth] in a physical body is [speaking] from God. [See I Cor. 12:3].

But every spirit who does not proclaim [this truth about] Jesus is not [speaking] from God. And this [person] represents the spirit of the antichrist [See 2:18-22; II John 7], whom you have heard would come. Well, now he is already here!

Here is the way God's love for us was demonstrated; He sent His one and only Son into the world so that we could have [spiritual] life through Him.

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.

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.