At some point, when the people were sedentary, the feast of Passover, which was a pastoral festival coincided with the spring festival of farmers, which consisted mostly of eating unleavened bread, kneaded with the first fruits cereal crop. The party itself of the Passover of Israel's feast spring that existed before the emergence of Israel as a people, was closely related to the faith experience of the liberation of the Hebrew slaves in Egypt: Ex 12,12-13.21-23. And it was not held according to the stock (or crops, in the case of the feast of the peasants), but as a commemoration of the liberation of the Exodus. The festival began with the Passover meal and extended by seven days in accordance with the tradition of unleavened bread: Ex 12.14 to 20. The Jewish feast of Passover has a history that forces us to consider several points: "First of all, what the conclusion might call home, when performing a ritual with the blood (marking the lintel and the doorposts of homes), and the dinner itself. Then the celebration centered in Jerusalem, which included a cultic sacrifice with blood (collected by the priests in vessels that passed from hand to hand to the altar), the part that corresponded to God's banquet fellowship and a dinner, which followed a well-established ritual, which played a key role of the lamb meat, unleavened bread, bitter herbs and the four cups of wine. All these elements of the memorial dinner symbolically embody the exodus to be shared fraternally. Dr. Mark Hymen often expresses his thoughts on the topic. .