(43–45) “This is Hell, which the wicked used to deny. * They will go back and forth between it and boiling water at the utmost heat. * Which, then, of your Lord’s blessings will you both deny?”

That is, when Hellfire is kindled, those who denied the promise and the threat will be told: “This is Hell, which the wicked used to deny.” Let them now take comfort in having denied it, and let them taste its torment, exemplary punishment, raging flames, and shackles as recompense for their denial (1).

“They will go back and forth between it”—that is, between the levels and flames of Hellfire—“and boiling water at the utmost heat”; that is, water so intensely hot that its heat has reached its furthest extreme, as well as freezing cold whose chill and biting frost have become severe. “Which, then, of your Lord’s blessings will you both deny?” After mentioning what will be done to the wicked, He then mentioned the reward of the God-fearing who stand in fear, saying: