To the very people he had hood-winked into obedience, the same ones who had followed him in his falsehood, he cried out:
“Look at how the sea has cleared before me so that I may overtake these slaves who have slipped from my grasp and rebelled against my rule and my land!”
Within himself, however, he kept debating whether to go after them, imagining that he might yet escape—an impossible dream. At times he would press forward; at others he would recoil.
It is related that Gabriel, peace be upon him, appeared in the guise of a horseman riding a dapple-gray mare. He passed in front of Pharaoh’s stallion—may Allah curse him—so the stallion neighed toward her and lunged after her. Gabriel sped ahead and plunged into the sea; the stallion bolted after him at full gallop, and Pharaoh followed, unable to restrain himself, powerless to harm or benefit himself in the least. When the troops saw their leader enter the sea they rushed in behind him, every last one of them, in great throngs upon throngs, until the vanguard was on the verge of emerging from the other side.
At that very moment Allah Most High instructed His Interlocutor, through the revelation He sent him, to strike the sea with his staff. Moses struck, and the sea crashed back upon them just as it had been before. Not a single person survived.
Allah the Exalted says:
“So We delivered Moses and all those with him; then We drowned the others. Surely in that is a sign, yet most of them would not believe. And verily your Lord—He alone is the Mighty, the Merciful.” (Ash-Shuʿarā’ 26:65–67)
That is: in saving His allies not one of them drowned, and in drowning His enemies not one of them escaped—an awesome sign and a decisive proof of His tremendous power and of the truthfulness of His Messenger in all that he brought from his Lord of the noble law and the upright paths.
He, Most High, also says:
“We led the Children of Israel across the sea, and Pharaoh and his troops pursued them in insolence and tyranny. Until, when drowning overtook him, he cried, ‘I believe that there is no deity but the One in whom the Children of Israel believe, and I am of those who submit.’ [He was told,] ‘Now—when you had disobeyed before and were among the corrupters! Today We shall preserve your body that you may be a sign for those who come after you. Yet many people are heedless of Our signs.’” (Yūnus 10:90–92)
Allah relates how Pharaoh—the leader of the unbelieving Copts—was drowned: the waves would buffet him down at one moment and hurl him up the next, while the Children of Israel looked on at the terrible punishment Allah was inflicting upon him and his army. This gladdened their eyes and soothed their hearts. When Pharaoh saw that destruction had surrounded him and the throes of death had seized him, only then did he repent and profess faith—yet faith avails no soul once it reaches that moment, as He, the Exalted, says:
“Indeed, those against whom the Word of your Lord has become final will never believe, even if every sign were to come to them, until they behold the painful punishment.” (Yūnus 10:96–97)
And He says:
“When they beheld Our might, they said, ‘We believe in Allah alone, and we reject what we used to associate with Him.’ But their belief, once they had seen Our might, did not benefit them. Such is the established way of Allah with His servants, and there the disbelievers were ruined.” (Ghāfir 40:84–85)