The followers of Jesus were convinced who he was and why his task given to them was so important. They continued bringing without letup teaching and declaring the good news about the Christ, Jesus, and asked their pupils and converted followers to do so too. Coming closer to the end times it is even more important because the world shall not be interested in God and many brought away from the Only One true God, by false preachers and mega churches.
We may not forget that language is always changing and that written language fossilizes it and makes it stop changing. The Bible, especially the King James Version, has been very influential on keeping language the same because it has been so widely read, but even there we must be aware that certain words have changed and that today certain phrases in spoken as well as written English may be brought differently than the 1611 version.
King James Version people are people who work against the Will of God, not willing to recognise that today we may have people with more and better knowledge of God's Holy Word than those of the 17th century. By not willing to accept the advancement which is made in Bible archaeology KJV-only people become adversaries of God.