The miracle that occurred on Shabbat HaGadol

(1) (Exod. 11:5:) AND EVERY FIRST-BORN <IN THE LAND OF EGYPT> SHALL DIE. All the first-born came together with their fathers.⁷³PRK 7:6/9; PR 17:5. <The first-born> said to < their fathers >: Whatever Moses has said he has brought upon us. Do you not wish us to live? Rather come and let us have these {slaves} [Hebrews] go away from among us; for if we do not, we are dead. They answered them and said to them: Even if all the Egyptians die, they will not go away from here. What did they do? All the first-born came together and went to Pharaoh. They cried out unto Pharaoh and said to him: Please have this people go away, for because of them evil will come {over them and over him} [over us and over you]. He said to his servants: Get going and beat those <people> on the legs. What did the first-born do? Immediately, when they had gone out, each and every one of them took his sword and killed his father. It is so stated (in Ps. 136:10): TO THE ONE WHO SMOTE EGYPT THROUGH THEIR FIRST-BORN. "To the one who smote the first-born of Egypt" is not written here, but TO THE ONE WHO SMOTE EGYPT THROUGH THEIR FIRST-BORN.