The irony of this is that "For there are three that bear record in heaven, the Father, the Word, and the Holy Ghost; and these three are one" is acknowledged by all the scholars I have seen as a forgery added by later transcribers to fit in with doctrine. It is called the Johannine Comma. There is no explicit exposition of the Trinity in the Bible. Honestly, if things had been that cut and dry, Arian, the Ebionites and other heretics really would have had no foot to stand on, and the early Ecumenical councils probably would have been wholly unnecessary.

Being a Muslim, I have always found this claim of some Evangelical Christians that the KJV specifically is "God's infallible Word" to be bizarre. Since when did Jesus (SAW) speak English? Of course, when we speak of the Qur'an, we only speak of the Arabic. Translations are essentially tafseer (interpretation, exegesis). I've never had the opportunity to speak to someone who believes this to get to understand their reasoning. Were the translators all prophets?