In thus chapter God promises the continuance of his favor to those who are returned from the captivity; so that upon the removal of his judgments, the fasts they had observed during the captivity may now be converted to so many occasions of rejoicing. He likewise promises in due time a general restoration of his people, and the enlargement of the Church by the accession of the Gentiles, vv. 1-20. The conclusion of the chapter intimates farther that the Jews, after their restoration, will be instrumental in converting many other nations, Zac 8:21-23. Compare Rom 11:15, Rom 11:16.