Thomas Brooks warns against the folly of indulging in sin, describing it as the 'fool's bauble' and 'fool's fiddle.' He emphasizes that fools take delight in wickedness, treating sin as a sport, which ultimately leads to their eternal damnation. Brooks cites various scriptures to illustrate that those who mock sin will face mockery in hell, and he stresses the corrupting nature of sin as a poison to the soul. He calls for a recognition of the grave consequences of delighting in evil, urging listeners to turn away from such folly.

Thomas Brooks emphasizes the grave condition of wicked men who willingly indulge in sin, illustrating how their hearts are hardened and their consciences seared. He warns that such individuals, who choose to live in wickedness despite the consequences, are not only blind to their peril but are also fully ripe for destruction. Brooks asserts that to allow these sin-lovers into heaven would be to fill it with hellishness, as their lives are characterized by rebellion against God. He concludes with a stark reminder that without true conversion, one cannot enter the kingdom of heaven.