The pinnacle of a ruler's power often brings unexpected vulnerability. Having completed his conquest of all nations, the Babylonian king achieved undisputed global dominance. This period of absolute rule is marked as the second year following the destruction of the Temple, rather than the second year of his actual reign, since Daniel and his companions were still undergoing their three-year training program in the royal court during his early years. The primary approach among commentators is that this era represents the moment the king finally established global rule [רש״י, מצודת דוד, אבן עזרא, מלבי״ם, אלשיך]. His arrogance had reached its absolute peak after he entered God's sanctuary [רש״י]. In these quiet days, free from the distractions of war, the king lay in bed contemplating the distant future and wondering who would eventually succeed him. These heavy thoughts laid the foundation for a deeply unsettling nighttime experience [מצודת דוד, אבן עזרא, מלבי״ם].
Although he experienced a single continuous event, the vision is described in plural terms. The primary approach among commentators is that the dream was highly complex, composed of several distinct and vivid elements, such as the various parts of a massive statue and the stone that shattered it [מצודת דוד, אבן עזרא, מלבי״ם]. Alternatively, the plurality reflects a sequence where the king first dreamed the vision itself, and then immediately dreamed its interpretation [יוסף אבן יחיא].
Following the vision, the king was struck by a profound internal agitation. His spirit was rattled and broken, much like the violent striking of a clapper inside a massive bell [רש״י, מצודת ציון, יוסף אבן יחיא, ביאור שטיינזלץ]. His breathing became heavy and labored from sheer anxiety [מצודת דוד], while his mind raced frantically in a desperate attempt to recall the vision that was quickly slipping away [יוסף אבן יחיא]. The severity of his turmoil was uniquely intense. Unlike previous rulers who remembered their nighttime visions but merely lacked the interpretations, the Babylonian king suffered a compounded panic because he completely forgot both the dream and its meaning [רש״י, אלשיך]. However, some commentators view the heightened description of his distress as a natural expression of language rather than an indication of a double forgetting [אבן עזרא].
The lingering effect of this terror on the king's rest is a matter of debate, as his sleep was entirely ruined and broken [רש״י, מצודת ציון, אבן עזרא, ביאור שטיינזלץ]. The prevailing view is that his sleep was completely shattered; overwhelmed by dread and racing thoughts, his rest was cut off, leaving him completely unable to sleep any further [מצודת דוד, יוסף אבן יחיא]. A contrasting approach suggests a fascinating paradox: despite experiencing immense terror, the king remained deeply asleep and did not wake up. This specific detail is what convinced him that he had not merely suffered a natural nightmare, which would have startled him awake out of fear. Instead, his inability to rouse himself proved that he was caught in the grip of a true spiritual and prophetic vision, one that left him paralyzed within his slumber [מלבי״ם].