He shall cause them that come of Jacob to take root: Israel shall blossom and bud, and fill the face of the world with fruit.
He - Yahweh. Here the song of the Lord as to His vineyard (Isaiah 27:2-5) ends; and the prophet confirms the sentiment in the song, under the same image of a vine bearing fruit by His grace (cf. Psalms 92:13-15; Hosea 14:5-6).
Israel shall ... world with fruit - (Romans 11:12.)