Presently the experience of divine mercy is exposed. First, to the recognition of divine mercy itself: "The steadfast love of the Lord never ceases, his mercies never come to an end." That is, not punishing, as if unmerciful. Since the Lord punished worthily, not reducing his creations backwards to extinction, or nothingness. Thus, Jeremiah 10:24 declares: "Correct me, O Lord, but in just measure; not in thy anger, lest thou bring me to nothing."
Source: Commentary on Lamentations