The recounting of the plagues brought upon Egypt begins with an unexpected focus on the heavy darkness that descended upon the land. This departure from the original historical sequence serves as a stylistic choice to highlight certain miracles regardless of their chronological order [רד״ק, ביאור שטיינזלץ]. However, this placement also carries deep historical significance. The darkness served as the ultimate punishing blow in the main series of plagues, acting as the critical turning point that finally compelled Pharaoh to grant the Israelites permission to leave [אבן עזרא, מלבי״ם]. Furthermore, leading with the darkness emphasizes the sheer magnitude of God's power. Had He simply wanted to free His people, He could have easily and quietly led them out under the cover of a pitch-black night without any resistance. Instead, He deliberately brought the full array of plagues to publicly demonstrate His miracles to the surrounding nations [אלשיך].
When God plunged the entire land of Egypt into darkness [רד״ק, מצודת דוד, המאירי, ביאור שטיינזלץ], He utilized a force that is not even a physical entity. Although darkness is merely the absence of light, it is depicted as a loyal messenger acting with agency, perfectly executing its assigned task and fulfilling God's will [אבן עזרא].
A central theme in this event is the complete lack of rebellion against God's command. The primary approach among commentators is that this absolute obedience refers to the plagues themselves. The plagues never failed to appear; they materialized with flawless precision exactly as God dictated. In a striking display of order, even the ordinary darkness of the night and the miraculous, suffocating darkness of the plague yielded to one another in perfect harmony, never defying their Creator [אלשיך]. Conversely, another perspective suggests that this unwavering obedience describes Moses and Aaron. Despite facing Pharaoh's wrath and Moses' own initial hesitations, the two leaders showed no fear. They refused to alter or abandon God's directives, courageously traveling wherever they were sent and delivering harsh truths directly to Pharaoh [רד״ק, אבן עזרא, המאירי, ביאור שטיינזלץ]. Ultimately, this profound obedience encompasses both the broad, overarching command of God and the minute details of each individual plague [רד״ק].