Isaiah 19:25

Whom the Lord of hosts shall bless; whom, i.e. which people, to wit, Israel, Egypt, and Assyria, expressed both in the foregoing verse, and in the following clause of this verse; of whom he speaks as of one people, in the singular number, because they are all united into one body and church. Or, For or because (as this particle is taken, 1 Samuel 15:15, and elsewhere) the Lord of hosts shall bless him or them. So this is added as a reason why he said Israel should be a blessing to them all. My people: this title, and those which follow, that were peculiar to the people of Israel, shall now be given to these and all other nations of the world.