The life of the exiled king undergoes a dramatic and complete transformation as he emerges from the shame of captivity and steps into a life of dignity within the Babylonian royal court. The first step in this transition involves his prison garments. The primary approach among commentators is that his wardrobe was entirely replaced; he stripped off the clothing of his imprisonment and received new, proper garments suitable for a free man [מצודת דוד, ביאור שטיינזלץ].
However, [מלבי״ם] offers a different perspective, drawing a sharp distinction between replacing clothing and altering it. Unlike Joseph, who was given a completely different set of clothes when freed from captivity, the exiled king kept his original garments. Even while in prison, his clothes were not soiled, but they did carry a specific mark of disgrace. Instead of issuing a new wardrobe, the Babylonian king transformed that very badge of shame into a symbol of honor, much like the emblems worn by high-ranking ministers to display their status. The king continued to wear these specific altered garments while dining to serve as a constant reminder of the kindness he received when elevated from the dungeon to the royal table.
Beyond his outward appearance, his daily life was completely restructured. He was provided with regular meals, which consisted of full, complete feasts rather than simple rations of bread. Furthermore, he did not merely receive food delivered from the royal kitchens; he was granted the distinct privilege of dining directly alongside the Babylonian king. This honored arrangement was not a temporary gesture but a permanent reality, lasting continually for the rest of his life [מצודת דוד].