KJV:
He that believeth on the Son of God hath the witness in himself: he that believeth not God hath made him a liar; because he believeth not the record that God gave of his Son.
NASB:
The one who believes in the Son of God has the testimony in himself; the one who does not believe God has made Him a liar, because he has not believed in the testimony that God has given concerning His Son.
KJV:
And this is the record, that God hath given to us eternal life, and this life is in his Son.
NASB:
And the testimony is this, that God has given us eternal life, and this life is in His Son.
KJV:
He that hath the Son hath life; and he that hath not the Son of God hath not life.
NASB:
He who has the Son has the life; he who does not have the Son of God does not have the life.
KJV:
These things have I written unto you that believe on the name of the Son of God; that ye may know that ye have eternal life, and that ye may believe on the name of the Son of God.
NASB:
These things I have written to you who believe in the name of the Son of God, so that you may know that you have eternal life.
KJV:
We know that whosoever is born of God sinneth not; but he that is begotten of God keepeth himself, and that wicked one toucheth him not.
NASB:
We know that no one who is born of God sins; but He who was born of God keeps him, and the evil one does not touch him.
KJV:
And we know that we are of God, and the whole world lieth in wickedness.
NASB:
We know that we are of God, and that the whole world lies in the power of the evil one.
KJV:
And we know that the Son of God is come, and hath given us an understanding, that we may know him that is true, and we are in him that is true, even in his Son Jesus Christ. This is the true God, and eternal life.
NASB:
And we know that the Son of God has come, and has given us understanding so that we may know Him who is true; and we are in Him who is true, in His Son Jesus Christ. This is the true God and eternal life.