Dear children, this is the last hour; and as you have heard that the antichrist is coming, even now many antichrists have come. This is how we know it is the last hour.
NIV
Boys (lads), it is the last time (hour, the end of this age). And as you have heard that the antichrist [he who will oppose Christ in the guise of Christ] is coming, even now many antichrists have arisen, which confirms our belief that it is the final (the end) time.
AMP
Little children, it is the last time: and as ye have heard that antichrist shall come, even now are there many antichrists; whereby we know that it is the last time.
KJV
And so we know and rely on the love God has for us. God is love. Whoever lives in love lives in God, and God in them.
NIV
And we know (understand, recognize, are conscious of, by observation and by experience) and believe (adhere to and put faith in and rely on) the love God cherishes for us. God is love, and he who dwells and continues in love dwells and continues in God, and God dwells and continues in him.
AMP
And we have known and believed the love that God hath to us. God is love; and he that dwelleth in love dwelleth in God, and God in him.
KJV
The one who does what is sinful is of the devil, because the devil has been sinning from the beginning. The reason the Son of God appeared was to destroy the devil's work.
NIV
[But] he who commits sin [who practices evildoing] is of the devil [takes his character from the evil one], for the devil has sinned (violated the divine law) from the beginning. The reason the Son of God was made manifest (visible) was to undo (destroy, loosen, and dissolve) the works the devil [has done].
AMP
He that committeth sin is of the devil; for the devil sinneth from the beginning. For this purpose the Son of God was manifested, that he might destroy the works of the devil.
KJV
There is no fear in love. But perfect love drives out fear, because fear has to do with punishment. The one who fears is not made perfect in love.
NIV
There is no fear in love [dread does not exist], but full-grown (complete, perfect) love turns fear out of doors and expels every trace of terror! For fear brings with it the thought of punishment, and [so] he who is afraid has not reached the full maturity of love [is not yet grown into love's complete perfection].
AMP
There is no fear in love; but perfect love casteth out fear: because fear hath torment. He that feareth is not made perfect in love.
KJV
You, dear children, are from God and have overcome them, because the one who is in you is greater than the one who is in the world.
NIV
Little children, you are of God [you belong to Him] and have [already] defeated and overcome them [the agents of the antichrist], because He Who lives in you is greater (mightier) than he who is in the world.
AMP
Ye are of God, little children, and have overcome them: because greater is he that is in you, than he that is in the world.
KJV
We know that we have come to know him if we keep his commands.
NIV
And this is how we may discern [daily, by experience] that we are coming to know Him [to perceive, recognize, understand, and become better acquainted with Him]: if we keep (bear in mind, observe, practice) His teachings (precepts, commandments).
AMP
And hereby we do know that we know him, if we keep his commandments.
KJV
Everyone who believes that Jesus is the Messiah is born of God, and everyone who loves the father loves his child as well.
NIV
EVERYONE WHO believes (adheres to, trusts, and relies on the fact) that Jesus is the Christ (the Messiah) is a born-again child of God; and everyone who loves the Father also loves the one born of Him (His offspring).
AMP
Whosoever believeth that Jesus is the Christ is born of God: and every one that loveth him that begat loveth him also that is begotten of him.
KJV
The Spirit, the water and the blood; and the three are in agreement.
NIV
And there are three witnesses on the earth: the Spirit, the water, and the blood; and these three agree [are in unison; their testimony coincides].
AMP
And there are three that bear witness in earth, the Spirit, and the water, and the blood: and these three agree in one.
KJV