Hell is the pit, the grave.
Hades, Gehenna, is the graves in the earth on fire, when Jesus returns in His Glorious Fiery Presence. The earth and the elements shall MELT with fervent heat, aka the Lake of fire.
And they shall go out and look on the dead bodies of the men who have rebelled against me. For t
heir worm shall not die, their fire shall not be quenched, and they shall be an abhorrence to all flesh.
And many of those who sleep in the dust of the earth shall awake, some to
everlasting life, and some to shame and
everlasting contempt.
It is better for you to enter life crippled or lame than with two hands or two feet to be thrown into the
eternal fire. And if your eye causes you to sin, tear it out and throw it away. It is better for you to enter life with one eye than with two eyes to be thrown into the hell of fire.
Then the King will say to those on his right, “Come, you who are blessed by my Father, inherit the kingdom prepared for you from the foundation of the world.” . . . Then he will say to those on his left, “Depart from me, you cursed, into the eternal fire prepared for the devil and his angels. . . . And these will go away into
eternal punishment, but the righteous into eternal life.”
.... inflicting vengeance on those who do not know God and on those who do not obey the gospel of our Lord Jesus. They will suffer the punishment of
eternal destruction, away from the presence of the Lord and from the glory of his might, when he comes on that day to be glorified in his saints...
If anyone worships the beast and its image and receives a mark on his forehead or on his hand, he also will drink the wine of God’s wrath, poured full strength into the cup of his anger, and he will be tormented with fire and sulfur in the presence of the holy angels and in the presence of the Lamb. And the smoke of their torment goes up
forever and ever, and they have no rest, day or night, these worshipers of the beast and its image, and whoever receives the mark of its name.
I think you have been deceived with a false doctrine.