Ephraem the Syrian
"Yet take care to ensure the safety of your livestock that remains after the plague, lest the hail come upon them." It is evident that God does not wish to bring destruction upon Egypt. This is shown by His prior warning of the impending punishment, encouraging the Egyptians to repent so that He might withhold His wrath. Furthermore, He instructs them to hasten and gather their animals. If they had complied and gathered their livestock as instructed, what purpose would the hail serve? The hail was sent to reveal the divine miracle, striking the cattle of those who did not believe. The gathering of the livestock was meant to demonstrate the outcome for those who turned back to God in repentance.