This refers to Babylon, renowned for its countless inhabitants and formidable army, which could fend off any adversary threatening those in power over them.
He elaborates on the reasons for the calamities that befell the Babylonians due to divine displeasure, stating, I am angry with my people; you have sullied my inheritance: I entrusted them to your care, yet you have shown them no mercy. This sentiment is echoed through Zechariah's words: I am exceedingly zealous for Jerusalem and Zion, filled with great wrath against those who slander: I was but a little angry, but they provoked me to greater evil (Zech. 1:14-15). Sometimes God's discipline springs from love; those who disregard His corrections and hold themselves in pride are often led, through afflictions, to humility—whether it is by the hand of enemies or through various trials. Just as difficult wounds are healed by fire and iron instead of normal remedies, so too does our benevolent God, observing a soul intent on its ruin and ensnared by vice, restore it through harsh trials. However, those appointed to enact punishment can unleash their fierce and unrestrained wrath, going beyond what is appropriate, thereby unjustly burdening those under their authority. This constitutes a serious transgression, inciting God's anger towards such individuals. Therefore, we must steer clear of this sin; if any of us are called to administer discipline while God is instructing, we must approach with humility, fully aware that the Teacher is greatly displeased when we impose excessive punishment.
Thus, He states, you have shown no mercy to the aged, and you have captured them, not by your own strength, but because I delivered them. Your cruelty and fierce disposition are grievous, and what is worse, your pride has led you to believe in your unending dominion and unshakeable power. Regarding the severe misfortunes that followed, He notes that you did not even consider or remember them. What were these misfortunes? Clearly, they were the trials of captivity and the afflictions sent upon her by God.