[2] Yehuda Klein (later Amital) was born in Oradea, Romania, son of Yekutiel Ze'ev and Devora.

After four years of secular primary education, he began religious studies with Rabbi Chaim Yehuda Levi.

[5] After a short stay at the Atlit detainee camp, he made his way to Jerusalem, where he studied at Hebron Yeshiva, receiving semicha from Rabbi Isser Zalman Meltzer, who's granddaughter he later married.

After the war, Amital became a rabbinic secretary in the Beth Din of Rehovot, and, two years later, he became an instructor at Yeshivat HaDarom, where he helped formulate the idea of a Hesder Yeshiva.

After the Six-Day War, he became the founding Rosh Yeshiva of Yeshivat Har Etzion, which he headed for 40 years.

Amital died on July 9 (27 Tammuz), 2010, and was laid to rest in the Har HaMenuchot cemetery in Jerusalem, where thousands attended his funeral.

[12] On January 4, 2006, Medan and Gigi were officially invested as co-roshei yeshiva, alongside Amital and Aharon Lichtenstein.

Despite an age gap of almost 25 years, the cousins-by-marriage would bounce ideas and bum cigarettes off of one another as they debated the pressing issues of the day.

Rav Shach became the head of the renowned Ponevezh Yeshiva in Bnei Brak and the firebrand ideological and political leader of the Lithuanian charedi community.