KJV:
And hereby we do know that we know him, if we keep his commandments.
NASB:
By this we know that we have come to know Him, if we keep His commandments.
KJV:
Love not the world, neither the things that are in the world. If any man love the world, the love of the Father is not in him.
NASB:
Do not love the world nor the things in the world. If anyone loves the world, the love of the Father is not in him.
KJV:
Let that therefore abide in you, which ye have heard from the beginning. If that which ye have heard from the beginning shall remain in you, ye also shall continue in the Son, and in the Father.
NASB:
As for you, let that abide in you which you heard from the beginning. If what you heard from the beginning abides in you, you also will abide in the Son and in the Father.
KJV:
And now, little children, abide in him; that, when he shall appear, we may have confidence, and not be ashamed before him at his coming.
NASB:
Now, little children, abide in Him, so that when He appears, we may have confidence and not shrink away from Him in shame at His coming.
KJV:
If ye know that he is righteous, ye know that every one that doeth righteousness is born of him.
NASB:
If you know that He is righteous, you know that everyone also who practices righteousness is born of Him.
KJV:
Beloved, now are we the sons of God, and it doth not yet appear what we shall be: but we know that, when he shall appear, we shall be like him; for we shall see him as he is.
NASB:
Beloved, now we are children of God, and it has not appeared as yet what we will be. We know that when He appears, we will be like Him, because we will see Him just as He is.
KJV:
Beloved, if our heart condemn us not, then have we confidence toward God.
NASB:
Beloved, if our heart does not condemn us, we have confidence before God;
KJV:
No man hath seen God at any time. If we love one another, God dwelleth in us, and his love is perfected in us.
NASB:
No one has seen God at any time; if we love one another, God abides in us, and His love is perfected in us.
KJV:
If a man say, I love God, and hateth his brother, he is a liar: for he that loveth not his brother whom he hath seen, how can he love God whom he hath not seen?
NASB:
If someone says, "I love God," and hates his brother, he is a liar; for the one who does not love his brother whom he has seen, cannot love God whom he has not seen.