Deuteronomy 32:25-27

25 The sword without and terror within shall destroy both the young man and the virgin, the suckling [also] with the man of gray hairs.

26 I said I would shatter them in pieces: I would make the remembrance of them to cease from among men,

27 if I did not fear the wrath of the enemy, lest their adversaries should become vain [and] lest they should say, Our high hand has done this and not the LORD.