How do we know that God's judgments serve a purpose?

In the account of the plagues, including the plague of frogs, God's judgments serve dual purposes: they both demonstrate His power and expose the stubbornness of the human heart. Pharaoh's rejection of God's commands shows how sinfulness can lead to hard-heartedness (Exodus 8:15). God's intent behind these judgments is not merely punitive; it is corrective, aimed at turning the hearts of the people back to Him. The plagues culminate in a definitive display of divine authority over the so-called gods of Egypt, leading to the ultimate liberation of His people.