The wicked suffer in hell for all eternity. You can't blame it on the KJV. All reputable Bible translations say basically the same thing. Like this:

(Luke 16:23-24 NIV) In hell, where he was in torment, he looked up and saw Abraham far away, with Lazarus by his side. {24} So he called to him, 'Father Abraham, have pity on me and send Lazarus to dip the tip of his finger in water and cool my tongue, because I am in agony in this fire.'

(Revelation 14:11 NIV) And the smoke of their torment rises for ever and ever. There is no rest day or night for those who worship the beast and his image, or for anyone who receives the mark of his name."

The Lake of Fire is referred to as the second death but it should be obvious that they will suffer eternally as well.

It's the work of the cults to deceive people into thinking that you'll just die in hell rather than suffer eternally. It's meant to lead people to keep on sinning and reject Christ because they think they won't spend eternity in hell.