The phrase "a pit of fire" is correct and usable in written English.
It can be used to describe a literal or metaphorical situation that is extremely dangerous, chaotic, or intense.
Example: "As the flames roared higher, the abandoned building felt like a pit of fire, consuming everything in its path."
Alternatives: "a sea of flames" or "a furnace of fire".
He gave the example of a mother jumping into a pit of fire to save her child as an act of pure compassion.
The core of his rhetoric involved a one-way trip into a pit of fire, and he meant it all quite literally.
The official term for that in British soccer is Game Over, and that's because the Earth would crack open and swallow us all in a pit of fire before an Alex Ferguson team would kick away a six-point lead with two games left.
After Chell completes the final test chamber, GLaDOS congratulates her and prepares her "victory candescence", maneuvering Chell into a pit of fire.
–in Dream Warriors before unshackling a victim from a bed frame so that he falls into a pit of fire after his friends demand he be let go.
As I was becoming who I was going to be, there were multiple authority figures whom I trusted completely sitting me down on a regular basis over the course of years essentially telling me I was innately perverted and that if I couldn't somehow figure it out, I would literally burn in a pit of fire forever.
Mute reminds me of a guy named Scott, with his tricycle and tighty-whities, who rides a bike down a shaky half-pipe, laughing over a pit of fire-breathing alligators, only to cry in agony as he crushes his balls on the landing.
"After a minute of playing the unicorn just runs off an edge into an endless pit of fire.
As early as his 1949 Los Angeles campaign, when he'd emerged from his battle with doubt, he had decided that Hell was not necessarily a bottomless pit of fire and brimstone but the everlasting punishment of "separation from God".
And right beside that beyond-his-years profundity is an equally excellent illustration in which a naked man travels down the waterslide of life, going from happy to sad, growing beard to growing a stache, until he his hurled into a pit of spikes or fire — it's a little hard to tell.
If I failed to meet God's expectations, I learned to believe that there awaits a pit of never-ending fire.
