To change one’s nature[1]
הים ראה וינס הירדן יסב לאחור
The Reed Sea[2] saw and ran away, the Jordan River turned backwards[3]
During the holiday of Pesach (as well as every other holiday), we recite Hallel during the morning prayers. It consists of chapters 113 to 118 from Psalms. Chapter 114 describes how when the Jews left Egypt, nature was entirely subservient to them. Nothing stood in their way. Most pronounced was the miracle of the splitting of the sea. On the seventh day of Pesach, we commemorate this event with the Torah Reading being the Song at Sea that the Jews recited[4] after this miracle. In Psalms the sea is described as “running away” from the Jews, meaning that it split in two, after seeing something. What did it see that made it split? Chazal teach us that it was the coffin[5] of Yosef[6]. When Yosef was dying, he commanded his brothers and their descendants to ensure when the Jews are redeemed from Egypt that his remains be taken to the land of Israel to be buried there[7]. The Torah describes that it was Moshe who brought the coffin of Yosef with him to the sea[8].