The King James Bible was translated from the Textus Receptus Manuscripts. The Manuscripts number in the thousands and agreed with one another consistently, which helped the King James scholars produce the most accurate translation of God's Word in the English language. Shown above is an original page from the 1611 edition of
I John's chapters 4 and 5. Please note I John 5:7 for your reference, as this verse is not found in any of the modern versions of the Bible.