The names of the three nations represent the people of those nations. AT: "the Israelites will be the third with the Egyptians and Assyrians" (See: [[rc://en/ta/man/translate/figs-metonymy]])
Possible meanings are 1) "join together with" or 2) "be the third blessing with" or 3) "be equal to." (See: [[rc://en/ta/man/translate/translate-ordinal]])
The names of the three nations refer to the people of those nations. This can be stated in active form. AT: "I have blessed you, people of Egypt, because you are my people; and I have blessed you, people of Assyria, because I created you; and I have blessed you, people of Israel, because I securely possess you" (See: [[rc://en/ta/man/translate/figs-metonymy]] and [[rc://en/ta/man/translate/figs-activepassive]])