The promise of future redemption is framed through the tender and profound image of a mother's compassion for her child. The shift from deep sorrow to relief is not just a change in historical circumstances, but an intimate divine comfort that heals the pain of the past.
When considering why this comfort is compared to a mother rather than a father, the primary approach among commentators is that a mother possesses a deeper, natural sense of mercy toward her child [אבן עזרא]. She has a unique ability to soothe and calm using soft words that flow directly from a compassionate heart [רד״ק, מצודת דוד, ביאור שטיינזלץ]. This specific type of comfort serves to pacify and bring peace after the severe troubles and suffering endured during exile [רד״ק, ביאור שטיינזלץ].
Another perspective suggests that the sheer act of reconnecting is the source of comfort. It is compared to a person who mourned for a mother who had gone far away and was presumed dead; her sudden return and physical presence bring ultimate relief [מלבי״ם, ביאור שטיינזלץ]. A different approach explains the mother imagery through the lens of taking responsibility. Just as a mother will often take the blame for her child's wrongdoing to protect him, God will comfort the people by attributing the fault for their sins to external factors, such as their environment, rather than blaming them directly [אהבת יהונתן].
Moving from the earthly comparison to the divine reality, it becomes clear that God Himself is the active comforter [שד״ל]. Because the people mourned the times when God hid His face and felt distant from them, God will personally provide the comfort to heal that specific grief [מלבי״ם].
Jerusalem plays a central role in this process of healing. It will serve as the physical location where this comfort takes place, as it is the exact spot where God's glory will be revealed to the people [רד״ק, שד״ל]. In that city, they will receive abundant goodness that will serve as compensation for all their past hardships [מצודת דוד]. Beyond merely being the setting of these events, Jerusalem itself, which was once the center of destruction and the cause of bitter mourning, will transform into the very source and instrument through which complete comfort will blossom [מלבי״ם, ביאור שטיינזלץ].