Isaiah 19:19-22
19:19 At that time there will be an altar for the Lord in the middle of the land of Egypt, as well as a sacred pillar dedicated to the Lord at its border.
19:20 It will become a visual reminder in the land of Egypt of the Lord who commands armies. When they cry out to the Lord because of oppressors, he will send them a deliverer and defender who will rescue them.
19:21 The Lord will reveal himself to the Egyptians, and they will acknowledge the Lord’s authority at that time. They will present sacrifices and offerings; they will make vows to the Lord and fulfill them.
19:22 The Lord will strike Egypt, striking and then healing them. They will turn to the Lord and he will listen to their prayers and heal them.