Have I smitten your children. The cities and towns of Judah are represented as so many mothers, and the populations as their children. It would, no doubt, be more natural to take "children" literally; but then we must read the verb in the next clause, "Ye have received," as the Septuagint actually renders.
In the former case the "smiting" will refer to all God's "sore judgments"—sword, drought, famine, pestilence; in the latter, to the loss of life in battle. Your own sword hath devoured your prophets.
Manasseh's persecution (which extended, according to Josephus, especially to the prophets) may account for the preponderance of "false prophets" referred to in verse 8 (cf. Matthew 23:29).