Adam Clarke on Lamentations 2:20

Consider to whom thou hast done this - Perhaps the best sense of this difficult verse is this: "Thou art our Father, we are thy children; wilt thou destroy thy own offspring? Was it ever heard that a mother devoured her own child, a helpless infant of a span long?" That it was foretold that there should be such distress in the siege, - that mothers should be obliged to eat their own children, is evident enough from Lev 26:29; Deu 28:53, Deu 28:56, Deu 28:57; but the former view of the subject seems the most natural and is best supported by the context. The priest and the prophet are slain; the young and old lie on the ground in the streets; the virgins and young men are fallen by the sword. "Thou hast slain them in the day of thine anger; Thou hast killed, and not pitied." See Deu 4:10.