The answer is: Plague of Darkness|Darkness

Exodus 10:21 - Like the third and sixth plagues, this plague was unannounced to Pharaoh. The darkness was an insult to the Egyptian sun-god Ra (or Re).

The ninth plague, the Plague of Darkness, introduced a level of heaviness that permeated ancient Egypt. This wasn't just any ordinary darkness—you could almost feel it! It spread over the land for three whole days, a surreal contrast to the vibrancy commonly associated with the Egyptian sun, which they revered deeply through their worship of Ra, the sun-god. One might picture the silent horror among the Egyptians, trapped in their blacked-out homes, unable to venture out or see.

This darkness serves as a vast metaphor in the biblical narrative, representing ignorance and the absence of divine presence. To put it into perspective, consider the Egyptians were highly dependent on their deities and especially devoted to Ra, who symbolized order and life. With darkness enveloping Egypt and freezing normalcy, these people encountered sheer terror—the kind that blotted out not just the sun but questioned their very beliefs.

In the midst of this, Israelite homes had light, showing a symbolic divide between those who aligned with the divine reality and those stuck in the shadows of oppression and ignorance. Intriguingly, many interpretations align this event with ancient tensions seen globally, where nature itself can become countless lessons for humanity.

Furthermore, this story reverberates into future narratives, emphasizing overcoming spiritual and moral darkness, suggesting that liberations are forged not just through physical actions but through illuminating the truth. The echoes of this plague can be found in stories showcasing the ultimate triumph of light over darkness throughout biblical literature.