What important event occurred during the exodus of the hebrews from egypt?

It when Yahweh called out to Moses in Mount Sinai to free the Hebrews from slavery by the Egyptians. After 300 years or so, Yahweh finally stretched his hands to carry the Hebrews from bondage. Yahweh commanded Moses and called his brother Aaron and both of them have gone to Egypt. In the course of the Pharaoh's insistence on not to free the Hebrews. Yahweh brought the seven plagues amongst the Egyptians. After the last plague, in which the Pharaoh's son died. He finally freed the Hebrews from the captivity. Later, when the Pharaoh's still went after the Hebrews when the Red Sea opened up the way for the Hebrews and the a great fire went upon the Pharaoh's until the Hebrews were able to cross the sea and when they caught while in the middle of the water the sea covered them and finally the Hebrews went to safety and journeyed to the Promised Land given to them by Yahweh.

Attach a picture of the question