How does 2 Peter illustrate God's grace and judgment?

In 2 Peter 2, the contrasting examples of Noah and Lot demonstrate the dual themes of God's grace and judgment. While God judged the world through the flood during Noah's time, He preserved Noah and his household, showcasing His grace and mercy. Similarly, although Sodom and Gomorrah faced devastating judgment, Lot—a righteous man—was spared and delivered from the destruction, which illustrates God's faithful preservation of the righteous amid judgment. This depiction reassures believers that while God's judgment is sure, His grace is equally certain and is manifested in the lives of His chosen ones.