en_tn/isa/19/24.md

Israel will be the third with Egypt and Assyria

This refers to the people from each nation: “The people of Israel will join with the Egyptians and Assyrians.” (See: rc://en/ta/man/translate/figs-metonymy)

Yahweh of Hosts

See how you translated this in Isaiah 1:9.

Blessed be Egypt, my people

The full meaning can be made explicit: "You are blessed, people of Egypt, because you are my people" (See: rc://en/ta/man/translate/figs-explicit)

Assyria, the work of my hands

"You are blessed, people of Assyria, because I created you"

and Israel, my inheritance

"and you are blessed, people of Israel, because I securely possess you"