30:12-17 When God is against a people, who will be for them? Who can be for them, so as to do them any kindness? Incurable griefs are owing to incurable lusts. Yet, though the captives suffered justly, and could not help themselves, the Lord intended to appear for them, and to punish their oppressors; and he will still do so. But every effort to heal ourselves must prove fruitless, so long as we neglect the heavenly Advocate and sanctifying Spirit. The dealings of His grace with every true convert, and every returning backslider, are the same in effect as his proceedings to the Jews.

16. Therefore—connected with Jer 30:13, because "There is none to plead thy cause … therefore" I will plead thy cause, and heal thy wound, by overwhelming thy foes. This fifteenth verse is inserted to amplify what was said at the close of Jer 30:14. When the false ways of peace, suggested by the so-called prophets, had only ended in the people's irremediable ruin, the true prophet comes forward to announce the grace of God as bestowing repentance and healing.

devour thee … be devoured … spoil … be a spoil … prey upon … give for a prey—retribution in kind (see on [938]Jer 2:3; Ex 23:22; Isa 33:1).