DailyCelestialChallenge: Monday/Darkness
Exodus 10: 21-22
Then the Lord said to Moses:
Extend your arm towards the sky, so that in all of Egypt there is a darkness so thick that you can even touch it.
Moses raised his arm to the sky and there was such great darkness in all of Egypt
That, for three days, no one could see his neighbor or move from his place. In contrast, in all the houses of the Israelites there was light.

The darkening of the sun had a double effect. Because this was how God showed his power over the sun, the most powerful religious symbol of Egypt, and they constituted a frontal attack against the same pharaoh, since He was considered the incarnation of Amun-Ra the sun god.
Hardening the heart to the call of God, can bring very serious consequences, the Pharaoh came to be warned by Moses, and many previous plagues had happened, but each plague produced rebellion in his heart, simply tried to interrupt the purpose that God had predestined for his people Israel, which was to free him from the yoke of Pharaoh.
Once again it is proven that in the dark it is impossible to make any movement, when there is a power failure suddenly at night everything is dark and if we try to make any movement we would stumble, then imagine being this way for three days, it would be a total torture, but God always makes a difference with the one who obeys him, although rebellion led them to walk in darkness, the camp of the people of Israel was shining like the light of the sun.