God wants all people to be saved but mankind has free will. There's absolutely no verses that say everyone will go to heaven eventually. It's not like people are sentenced to hell and then get out. Or they die there instead of spending eternity there.

The Lake of Fire is either hell or just like it.

(Revelation 14:9-11 NIV) A third angel followed them and said in a loud voice: "If anyone worships the beast and his image and receives his mark on the forehead or on the hand, {10} he, too, will drink of the wine of God's fury, which has been poured full strength into the cup of his wrath. He will be tormented with burning sulfur in the presence of the holy angels and of the Lamb. {11} 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."

Their torment lasts forever and ever.