This is a repetition and expansion of the blessing given to Abraham. Egypt is called my people,
Assyria the work of my hands,
and Israel my inheritance,
but each of these statements applies to each of the three nations. God will be the God of all nations, not just Israel. But, Israel specifically being called my inheritance,
does indicate that she is the nation chosen of old.
25 whom the LORD of hosts has blessed, saying, “Blessed be Egypt my people, and Assyria the work of my hands, and Israel my inheritance.”