John Wesley on 2 Kings 25:7

Slew, &c. - Tho' they were but children, that this spectacle, the last he was to behold, might leave a remaining impression of grief and horror upon his spirit. And in slaying his sons they in effect declared, that the kingdom was no more, and that he nor any of his breed were fit to be trusted: therefore not fit to live. Babylon - Thus two prophecies were fulfilled, which seemed contrary one to the other, that he should go to Babylon, Jer 32:5, 34:3, and that he should never see Babylon: which seeming contradiction, because Zedekiah the false prophet could not reconcile, he concluded both were false, and it seems Zedekiah the king might stumble at this difficulty.