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5 And say to them, Thus saith the Lord GOD; In the day when I chose Israel, and lifted up my hand to the seed of the house of Jacob, and made myself known to them in the land of Egypt, when I lifted up my hand to them, saying, I am the Lord your GOD;
An elder brother, as in Genesis 10:21, signifies the internal church.
(Reference: Arcana Coelestia 1222)
'Mizraim' signifies the same thing as Egypt.
(Reference: Arcana Coelestia 1165)