Eugen Mittwoch behalf of Mittwoch. Because of their colonial activities in Ethiopia, the Italians were extremely interested in Mittwoch's knowledge and research. Mittwoch was very active on behalf of the Ethiopian Jews (Falasha), and was also one of the first German Jews who could speak fluent Ivrit. Starting in 1933, Mittwoch used his "privileged" position in Germany (he continued to receive his salary as a German professor until the beginning of the war) on behalf of the Jewish community, he became head of the American Jewish Joint Distribution Committee in Berlin. However, in 1938, after Kristallnacht, also Mittwoch had to emigrate, and
Week an early continuous use of a seven-day week; referring to the Jews during the Babylonian Captivity in the 6th century BC, after the destruction of the Temple of Solomon. While the seven-day week in Judaism is tied to Creation account in the Book of Genesis in the Hebrew Bible (where God creates the heavens and the earth in six days and rests on the seventh; , in the Book of Exodus, the fourth of the Ten Commandments is to rest on the seventh day, "Shabbat", which can be seen as implying a socially instituted seven-day week), it is not clear