Why is the Sabbath before Pesach known as 'Shabbos HaGadol' or the Great Shabbos? The simplest answer comes from the reading of the Haftorah, after the Torah reading, which comes from Malachi 3 which concludes with, "Behold I will send you Elijah the prophet before the coming of the great and awesome day of the Lord." Or, in Hebrew, "HaGadol VeHanora".  What does the reading from Malachi, which involves a reproof of the Jewish people and a promised final redemption have to do with Pesach? But then why does Elijah the Prophet show up at the Seder? The answer once again is in Malachi. "I will send you Elijah the prophet before the coming of the great and awesome day of the Lord, that he may turn the heart of the fathers back through the children, and the heart of the children back through their fathers-lest I come and smite the earth with utter destruction." There are two times that Elijah is set to appear, the Bris, the circumcision, and the Passov...