The King James Bible (KJB) was translated from the traditional Hebrew and Greek texts (Masoretic Hebrew Text, The Second Great Rabbinic Bible and the Greek Textus Receptus (TR) or Received Text) and God’s Words in these original sources most Christians would agree are verbally inspired or God breathed. 2 Timothy 3:16 “All scripture is given by inspiration of God,…”.
But here’s what interesting. Modern translations (after 1880) are largely based on the Nestle-Aland Greek text, which is an edited version of the Westcott-Hort Greek text, which is largely the Codex Vaticanus with some corrections from Codex Sinaiticus, not Textus Receptus (TR) the Greek Text on which the KJB is based. The Nestle-Aland Greek text differs from the TR by about 9,970 Greek word differences, additions or subtractions equalling 7% of the total 140,521 words in TR.