Jerome : (Verse 6) Those who come out from the root of Jacob will flourish and grow Israel: and they will fill the face of the world with their offspring. LXX: The sons of Jacob who come: Israel will flourish and bloom, and its fruits will fill the earth. After the Apostles, preaching the Gospel in the whole world, have said: We will make peace for Christ, peace will be made for you, those who come from the seed of Jacob and have reached the Apostolic dignity will be called sons of Jacob. Then Israel will sprout and flourish, seeing that the teachings of its children have filled the entire world, and have brought forth abundant fruits that it had not brought while remaining in Judaea. — Commentary on Isaiah