'Stronghold' in the Bible

“‘Son of man, know that on the day I take their stronghold from them, their pride and joy, the delight of their eyes and the longing of their hearts, as well as their sons and daughters,

I will pour out My wrath on Pelusium,the stronghold of Egypt,and will wipe out the crowds of Thebes.

"Thus you must say to them, 'Thus says the Lord Yahweh: "{As I live}, {surely} whoever [is] in the ruins, by the sword they will fall, and whoever [is] on the surface of the open field, I will give him to the animals to eat him, and whoever [is] in the stronghold and in the cave, they will die by the plague.