What is the significance of being warned by God?

In Exodus, God's warnings about impending judgment illustrate His mercy and grace. Despite the wickedness of Pharaoh and Egypt, God provides a chance for repentance by forewarning them of the hail. This reflects a broader spiritual truth: God desires all to come to repentance, as evident in His patient dealings with humanity. The warnings serve to build our faith by showing that God is not only just but also merciful, offering us the opportunity to seek refuge in Him and His provisions before judgment comes.