KJV:
And every man that hath this hope in him purifieth himself, even as he is pure.
NASB:
And everyone who has this hope fixed on Him purifies himself, just as He is pure.
KJV:
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.
NASB:
the one who practices sin is of the devil; for the devil has sinned from the beginning. The Son of God appeared for this purpose, to destroy the works of the devil.
KJV:
In this the children of God are manifest, and the children of the devil: whosoever doeth not righteousness is not of God, neither he that loveth not his brother.
NASB:
By this the children of God and the children of the devil are obvious: anyone who does not practice righteousness is not of God, nor the one who does not love his brother.
KJV:
For this is the message that ye heard from the beginning, that we should love one another.
NASB:
For this is the message which you have heard from the beginning, that we should love one another;
KJV:
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.
NASB:
We know love by this, that He laid down His life for us; and we ought to lay down our lives for the brethren.
KJV:
And hereby we know that we are of the truth, and shall assure our hearts before him.
NASB:
We will know by this that we are of the truth, and will assure our heart before Him
KJV:
And this is his commandment, That we should believe on the name of his Son Jesus Christ, and love one another, as he gave us commandment.
NASB:
This is His commandment, that we believe in the name of His Son Jesus Christ, and love one another, just as He commanded us.
KJV:
And he that keepeth his commandments dwelleth in him, and he in him. And hereby we know that he abideth in us, by the Spirit which he hath given us.
NASB:
The one who keeps His commandments abides in Him, and He in him. We know by this that He abides in us, by the Spirit whom He has given us.
KJV:
Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh is of God:
NASB:
By this you know the Spirit of God: every spirit that confesses that Jesus Christ has come in the flesh is from God;
KJV:
And every spirit that confesseth not that Jesus Christ is come in the flesh is not of God: and this is that spirit of antichrist, whereof ye have heard that it should come; and even now already is it in the world.
NASB:
and every spirit that does not confess Jesus is not from God; this is the spirit of the antichrist, of which you have heard that it is coming, and now it is already in the world.