While the cloud stalled the Egyptian advance, Moses lifted his rod and the waters of the Red Sea parted, providing both an escape path for the Israelites and a trap for the Egyptians.
فَكَانَ ظَلَامٌ مِنْ جِهَةِ ٱلْمِصْرِيِّينَ ،‏ وَنُورٌ مِنْ جِهَةِ ٱلْإِسْرَائِيلِيِّينَ .‏