Fascinating verses in Isaiah 19

Isaiah 19:

This message came to me concerning Egypt:

Look! The Lord is advancing against Egypt,
    riding on a swift cloud.
The idols of Egypt tremble.
    The hearts of the Egyptians melt with fear.

2 “I will make Egyptian fight against Egyptian—
    brother against brother,
neighbor against neighbor,
    city against city,
    province against province.
3 The Egyptians will lose heart,
    and I will confuse their plans.

They will plead with their idols for wisdom

    and call on spirits, mediums, and those who consult the spirits of the dead.

4 I will hand Egypt over

    to a hard, cruel master.

A fierce king will rule them,”

    says the Lord, the Lord of Heaven’s Armies
...

16 In that day the Egyptians will be as weak as women. They will cower in fear beneath the upraised fist of the Lord of Heaven’s Armies. 17 Just to speak the name of Israel will terrorize them, for the Lord of Heaven’s Armies has laid out his plans against them.

18 In that day five of Egypt’s cities will follow the Lord of Heaven’s Armies. They will even begin to speak Hebrew, the language of Canaan. One of these cities will be Heliopolis, the City of the Sun.

19 In that day there will be an altar to the Lord in the heart of Egypt, and there will be a monument to the Lord at its border. 20 It will be a sign and a witness that the Lord of Heaven’s Armies is worshiped in the land of Egypt. When the people cry to the Lord for help against those who oppress them, he will send them a savior who will rescue them.21 The Lord will make himself known to the Egyptians. Yes, they will know the Lord and will give their sacrifices and offerings to him. They will make a vow to the Lord and will keep it. 22 The Lord will strike Egypt, and then he will bring healing. For the Egyptians will turn to the Lord, and he will listen to their pleas and heal them.