Lamentations 3:13 - Matthew Poole's English Annotations on the Holy Bible

That is, he hath made his judgments to pierce the most inward parts of the nation; or, he hath mortally wounded me. In the Hebrew it is, the daughters of his quiver, a way of speaking very usual in Hebrew, to express any thing that comes from another as the effect either of a natural or moral cause; so sparks are called the sons of the quick coal, Job 5:7, and corn the son of the floor, &c.