Universalism claims, in some incarnations, that men will be given a second chance "in hell" to repent and that in fact they will with their sufferings come to God.
As I read this verse I thought about Universalism
Rev 16:7 And I heard another out of the altar say, Even so, Lord God Almighty, true and righteous are thy judgments.
Rev 16:8 And the fourth angel poured out his vial upon the sun; and power was given unto him to scorch men with fire.
Rev 16:9 And men were scorched with great heat, and blasphemed the name of God, which hath power over these plagues: and they repented not to give him glory.
Rev 16:10 And the fifth angel poured out his vial upon the seat of the beast; and his kingdom was full of darkness; and they gnawed their tongues for pain,
God has over the years given many the opportunity to repent and turn to God and they have rejected Him.
Here we have a clear biblical case of the judgments of God and in the face of this second chance, rather than accept God they just became all the more belligerent and rebellious. What makes any Universalist believe the judgments of God will force all men to turn to God when they have proven for years they won't?