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Ultra-Orthodox Jews burn leavened items in a final preparation before the start at sundown of the Jewish Pesach (Passover) holiday, on March 25, 2013 in Jerusalem. Religious Jews worldwide eat matzoth during the eight-day Pesach holiday that commemorates the Israelis' exodus from Egypt some 3,500 years ago and their ancestors' plight by refraining from eating leavened food products. MENAHEM KAHANA/AFP/Getty Images ( 518456182 )

Ultra-Orthodox Jewish men prepare Matzoth, or unleavened bread, in a final preparation before the start at sundown of the Jewish Pesach (Passover) holiday on March 25, 2013 in Bnei Brak, Israel. Religious Jews throughout the world eat matzoth during the eight-day Passover, or Pesach, holiday, The Jewish holiday commemorates the Israelis' exodus from Egypt some 3,500 years ago and their ancestors' plight by refraining from eating leavened food. Passover begins March 25 and ends on the evening of April 02. (Photo by Uriel Sinai/Getty Images) ( 164616448 )

An ultra-Orthodox Jewish youth looks through a window as a man grinds wheat for the preparation of matza, a traditional unleavened bread eaten during the upcoming Jewish holiday of Passover, in the southern city of Ashdod March 18, 2013. Passover commemorates the flight of Jews from ancient Egypt as described in Exodus. REUTERS/Amir Cohen ( ISRAEL/ )

Ultra-Orthodox Jewish men manually grind flour to be used for making of the Matzoth or unleavened bread on March 17, 2013, in Jerusalem. Religious Jews throughout the world eat matzoth during the eight-day Pesach holiday (Passover), which begins the March 25, with the sunset to commemorate the Israelis' exodus from Egypt some 3,500 years ago and commemorate their ancestors' plight by refraining from eating leavened food products. MENAHEM KAHANA/AFP/Getty Images ( 518251540 )

An ultra-Orthodox Jewish youth dips a strainer in water to remove remains of leaven in preparation for the upcoming Jewish holiday of Passover in the southern city of Ashdod March 20, 2013. Passover, which starts next week, commemorates the flight of Jews from ancient Egypt, as described in the Exodus chapter of the Bible. According to the account, the Jews did not have time to prepare leavened bread before fleeing to the promised land. REUTERS/Amir Cohen ( ISRAEL/ )

Ultra-Orthodox Jews fill containers with water from a mountain spring to be used to bake the matzoth (unleavened bread) during the Maim Shelanu ceremony on March 14, 2013 in Jerusalem, Israel. Religious Jews throughout the world eat matzoth during the eight-day Passover, or Pesach, holiday, The Jewish holiday commemorates the Israelis' exodus from Egypt some 3,500 years ago and their ancestors' plight by refraining from eating leavened food. Passover begins March 25 and ends on the evening of April 02. (Photo by Uriel Sinai/Getty Images) ( 163691456 )

Ultra-Orthodox Jews collect water to make matza during the Maim Shelanoo ceremony at a mountain spring, in Jerusalem, Sunday, March 24, 2013. The water is used to prepare the traditional unleavened bread for the high holiday of Passover which begins Monday. (AP Photo/Oded Balilty) ( Mideast Israel Passover )

Ultra-Orthodox Jews take part in the "Mayim Shelanu" ceremony to collect water from a natural spring, near Jerusalem March 24, 2013. The water is used to make matza, the traditional unleavened bread to be eaten on the Jewish holiday of Passover which starts on Monday. Passover commemorates the flight of Jews from ancient Egypt, as described in the Exodus chapter of the Bible. REUTERS/ Nir Elias ( ISRAEL/ )

Ultra-Orthodox Jews collect water to make matza during the Maim Shelanoo ceremony at a mountain spring, in Jerusalem Sunday March 24, 2013. The water is used to prepare the traditional unleavened bread for the high holiday of Passover which begins Monday. (AP Photo/Oded Balilty) ( Mideast Israel Passover )

Ultra-Orthodox Jews fill water from a mountain spring to be used to bake the matzoth (unleavened bread) during the Maim Shelanu ceremony on March 14, 2013 in Jerusalem, Israel. Religious Jews throughout the world eat matzoth during the eight-day Passover, or Pesach, holiday, The Jewish holiday commemorates the Israelis' exodus from Egypt some 3,500 years ago and their ancestors' plight by refraining from eating leavened food. Passover begins March 25 and ends on the evening of April 02. (Photo by Uriel Sinai/Getty Images) ( 163691158 )

Ultra-Orthodox Jews collect water to make matza during the Maim Shelanoo Ceremony at a mountain spring, in Jerusalem Sunday March 24, 2013. The water is used to prepare the traditional unleavened bread for the high holiday of Passover which begins Monday. (AP Photo/Oded Balilty) ( Mideast Israel Passover )

Ultra-Orthodox Jews prepare the Matzoth or unleavened bread on March 14, 2013 in Jerusalem, Israel. Religious Jews throughout the world eat matzoth during the eight-day Passover, or Pesach, holiday, The Jewish holiday commemorates the Israelis' exodus from Egypt some 3,500 years ago and their ancestors' plight by refraining from eating leavened food. Passover begins March 25 and ends on the evening of April 02. (Photo by Uriel Sinai/Getty Images) ( 163697421 )

Ultra-Orthodox Jewish youths prepare matza, a traditional unleavened bread, to be eaten during the upcoming Jewish holiday of Passover in Jerusalem March 21, 2013. Passover, which starts next week, commemorates the flight of Jews from ancient Egypt, as described in the Exodus chapter of the Bible. According to the account, the Jews did not have time to prepare leavened bread before fleeing to the promised land. REUTERS/Nir Elias ( ISRAEL/ )

Ultra-Orthodox Jewish men prepare matza, a traditional unleavened bread, to be eaten during the upcoming Jewish holiday of Passover in Jerusalem March 21, 2013. Passover, which starts next week, commemorates the flight of Jews from ancient Egypt, as described in the Exodus chapter of the Bible. According to the account, the Jews did not have time to prepare leavened bread before fleeing to the promised land. REUTERS/Nir Elias ( ISRAEL/ )

Ultra-Orthodox Jewish youths prepare matza, a traditional unleavened bread, to be eaten during the upcoming Jewish holiday of Passover in Jerusalem March 21, 2013. Passover, which starts next week, commemorates the flight of Jews from ancient Egypt, as described in the Exodus chapter of the Bible. According to the account, the Jews did not have time to prepare leavened bread before fleeing to the promised land. REUTERS/Nir Elias ( ISRAEL/ )

An Ultra-Orthodox Jewish man selects the Matzoth, or unleavened bread, after it was baked on March 19, 2013, in Jerusalem. Religious Jews throughout the world eat matzoth during the eight-day Pesach holiday (Passover), which begins on March 25, with the sunset to commemorate the Israelis' exodus from Egypt some 3,500 years ago and commemorate their ancestors' plight by refraining from eating leavened food products. MENAHEM KAHANA/AFP/Getty Images ( 518294695 )

Ultra-Orthodox Jewish men wait for their Rabbi before preparing Matzoth, or unleavened bread, in a final preparation before the start at sundown of the Jewish Pesach (Passover) holiday on March 25, 2013 in Bnei Brak, Israel. Religious Jews throughout the world eat matzoth during the eight-day Passover, or Pesach, holiday, The Jewish holiday commemorates the Israelis' exodus from Egypt some 3,500 years ago and their ancestors' plight by refraining from eating leavened food. Passover begins March 25 and ends on the evening of April 02. (Photo by Uriel Sinai/Getty Images) ( 164616443 )

Ultra-Orthodox Jewish men prepare Matzoth, or unleavened bread, in a final preparation before the start at sundown of the Jewish Pesach (Passover) holiday on March 25, 2013 in Bnei Brak, Israel. Religious Jews throughout the world eat matzoth during the eight-day Passover, or Pesach, holiday, The Jewish holiday commemorates the Israelis' exodus from Egypt some 3,500 years ago and their ancestors' plight by refraining from eating leavened food. Passover begins March 25 and ends on the evening of April 02. (Photo by Uriel Sinai/Getty Images) ( 164616451 )

Ultra-Orthodox Jewish men inspect their Matzoth, or unleavened bread, in a final preparation before the start at sundown of the Jewish Pesach (Passover) holiday on March 25, 2013 in Bnei Brak, Israel. Religious Jews throughout the world eat matzoth during the eight-day Passover, or Pesach, holiday, The Jewish holiday commemorates the Israelis' exodus from Egypt some 3,500 years ago and their ancestors' plight by refraining from eating leavened food. Passover begins March 25 and ends on the evening of April 02. (Photo by Uriel Sinai/Getty Images) ( 164616440 )

An Ultra-Orthodox Jewish man wraps a stick with paper before preparing the Matzoth, or unleavened bread, in a final preparation before the start at sundown of the Jewish Pesach (Passover) holiday on March 25, 2013 in Bnei Brak, Israel. Religious Jews throughout the world eat matzoth during the eight-day Passover, or Pesach, holiday, The Jewish holiday commemorates the Israelis' exodus from Egypt some 3,500 years ago and their ancestors' plight by refraining from eating leavened food. Passover begins March 25 and ends on the evening of April 02. (Photo by Uriel Sinai/Getty Images) ( 164616445 )

Ultra-Orthodox Jewish men prepare to dip cooking utensils in boiling water to remove remains of leaven ahead of the upcoming Jewish holiday of Passover in the southern city of Ashdod March 20, 2013. Passover, which starts next week, commemorates the flight of Jews from ancient Egypt, as described in the Exodus chapter of the Bible. According to the account, the Jews did not have time to prepare leavened bread before fleeing to the promised land. REUTERS/Amir Cohen ( ISRAEL/ )

Ultra-Orthodox Jews wait to have their cooking utensils dipped in boiling water to remove remains of leaven in preparation for the Jewish holiday of Passover, in Jerusalem's Mea Shearim neighborhood March 24, 2013. Passover, which starts at sundown Monday, commemorates the flight of Jews from ancient Egypt, as described in the Exodus chapter of the Bible. According to the account, the Jews did not have time to prepare leavened bread before fleeing to the promised land. REUTERS/Nir Elias ( ISRAEL/ )

An ultra-Orthodox Jewish boy looks inside a pot containing boiling water where cooking utensils are dipped to remove remains of leaven in preparation for the Jewish holiday of Passover, in Jerusalem's Mea Shearim neighborhood March 24, 2013. Passover, which starts at sundown Monday, commemorates the flight of Jews from ancient Egypt, as described in the Exodus chapter of the Bible. According to the account, the Jews did not have time to prepare leavened bread before fleeing to the promised land. REUTERS/Nir Elias ( ISRAEL/ )

Ultra-Orthodox Jewish men burn leavened items in a final preparation before the Passover holiday in the ultra-Orthodox Jewish town of Bnei Brak, near Tel Aviv, Israel, Monday, March. 25, 2013. Jews are forbidden to eat leavened foodstuffs during the Passover holiday that celebrates the biblical story of the Israelites' escape from slavery and exodus from Egypt. (AP Photo/Oded Balilty) ( APTOPIX Mideast Israel Passover )

Children cover their faces from smoke as leavened items are burned in a final preparation before the start at sundown of the Jewish Pesach (Passover) holiday on March 25, 2013 in Bnei Brak, Israel. Religious Jews throughout the world eat matzoth during the eight-day Passover, or Pesach, holiday, The Jewish holiday commemorates the Israelis' exodus from Egypt some 3,500 years ago and their ancestors' plight by refraining from eating leavened food. Passover begins March 25 and ends on the evening of April 02. (Photo by Uriel Sinai/Getty Images) ( 164616167 )

A Rabbi student who traveled from the USA to conduct passover seder ceremonies in Nepal reads as he prepares for this evening event on March 25, 2013. Jewish people traveled from across Asia to celebrate Passover Seder together in Nepal, which organizers are calling the biggest such event in the world. PRAKASH MATHEMA/AFP/Getty Images ( 518457156 )

Rabbi student, who traveled from the United States to conduct passover seder ceremonies, prepare on March 25, 2013 for an evening event in Kathmandu. Jewish people traveled from across Asia to celebrate passover seder together in Nepal, which organizers are calling the biggest such event in the world. PRAKASH MATHEMA/AFP/Getty Images ( 518457332 )

A Jewish rabbi student prepares to conduct passover ceremony in Kathmandu on March 25, 2013.Jewish people traveled from across Asia to celebrate Passover Seder together in Nepal, which organizers are calling the biggest such event in the world. PRAKASH MATHEMA/AFP/Getty Images ( 518457640 )

Ultra-Orthodox Jewish youths burn leavened items in final preparation for the Passover holiday in the ultra-Orthodox Jewish town of Bnei Brak, near Tel Aviv, Israel, Monday, March. 25, 2013. Jews are forbidden to eat leavened foodstuffs during the Passover holiday that celebrates the biblical story of the Israelites' escape from slavery and exodus from Egypt. (AP Photo/Oded Balilty) ( Mideast Israel Passover )

An ultra-Orthodox Jew is seen through a heat mirage as they burn leaven in the Mea Shearim neighborhood of Jerusalem, ahead of the Jewish holiday of Passover, March 25, 2013. Passover commemorates the flight of Jews from ancient Egypt, as described in the Exodus chapter of the Bible. According to the account, the Jews did not have time to prepare leavened bread before fleeing to the promised land. REUTERS/Ronen Zvulun ( ISRAEL/ )

Children play as leavened items are burned in a final preparation before the start at sundown of the Jewish Pesach (Passover) holiday on March 25, 2013 in Bnei Brak, Israel. Religious Jews throughout the world eat matzoth during the eight-day Passover, or Pesach, holiday, The Jewish holiday commemorates the Israelis' exodus from Egypt some 3,500 years ago and their ancestors' plight by refraining from eating leavened food. Passover begins March 25 and ends on the evening of April 02. (Photo by Uriel Sinai/Getty Images) ( 164616170 )

Ultra-Orthodox Jewish men burn leavened items in final preparation for the Passover holiday in the ultra-Orthodox Jewish town of Bnei Brak, near Tel Aviv, Israel, Monday, March. 25, 2013. Jews are forbidden to eat leavened foodstuffs during the Passover holiday that celebrates the biblical story of the Israelites' escape from slavery and exodus from Egypt. (AP Photo/Oded Balilty) ( Mideast Israel Passover )