Charles Ellicott Commentary Jeremiah 13:14

"And I will dash them one against another, even the fathers and the sons together, saith Jehovah: I will not pity, nor spare, nor have compassion, that I should not destroy them." — Jeremiah 13:14 (ASV)

One against another. —The rendering answers to the Hebrew idiom, but that idiom, as in the margin, a man against his brother, has a force which is lacking in the English, and forms a transition from the symbol to the reality. The words point to what we should call the “crash” of a falling kingdom, when all bonds that keep society together are broken.