KJV:
Whosoever is born of God doth not commit sin; for his seed remaineth in him: and he cannot sin, because he is born of God.
NASB:
No one who is born of God practices sin, because His seed abides in him; and he cannot sin, because he is born of God.
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:
Whosoever hateth his brother is a murderer: and ye know that no murderer hath eternal life abiding in him.
NASB:
Everyone who hates his brother is a murderer; and you know that no murderer has eternal life abiding in him.
KJV:
For if our heart condemn us, God is greater than our heart, and knoweth all things.
NASB:
in whatever our heart condemns us; for God is greater than our heart and knows all things.
KJV:
Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.
NASB:
Beloved, do not believe every spirit, but test the spirits to see whether they are from God, because many false prophets have gone out into the world.
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.