Isaiah 57:11

Yahweh asked the Israelites a question. Who had terrified them that they betrayed the truth (cf. Proverbs 30:6), their covenant partner, and their concern for Him (cf. Isaiah 57:1)? Obviously it was not a great threat that had made them unfaithful, but neglect of Him. Perhaps if He had been more active in judging their sins they would have remembered Him. But, graciously, He had been silent about their sins, and so they had not paid attention to Him.

"Possibly we have here an example of Isaiah’s preaching during the long dark days of Manasseh." [Note: Motyer, p. 474.]