Michel Yehuda Lefkowitz was an Israeli Haredi Torah leader and rosh yeshiva in Bnei Brak for over 70 years. He was a maggid shiur at Yeshivas Tiferes Tzion from 1940 to 2011 and rosh yeshiva of Yeshivas Ponovezh L’Tzeirim from 1954 to 2009, raising thousands of students. He was a member of the Moetzes Gedolei HaTorah of Degel HaTorah, a member of Mifal HaShas, and nasi (president) of the Acheinu kiruv organization, and played a leading role in the fight for Torah-true education in yeshivas and Talmud Torahs in Israel. In addition to his own Torah works, he published the teachings of his rebbi, Rabbi Shlomo Heiman, in the two-volume Chiddushei Shlomo.

Avraham Yeshaya Karelitz, also known as the Chazon Ish after his magnum opus, was a Belarusian-born Orthodox rabbi who later became one of the leaders of Haredi Judaism in Israel, where he spent his final 20 years, from 1933 to 1953.