DEC Staff

Rav Aharon Katz

Rosh Yeshiva

Rav Aharon Katz is the founder and Rosh Yeshiva of Derech Etz Chaim since its inception in 1998. He is a Musmach of Rav Yakov Weinberg ZT”L and Rav Moshe Halbershtam ZT"L and learned in Eretz Yisrael under Rav Shlomo Wolbe ZT”L. Through his early relationships with Gedolei Yisrael, and his decades of experience in Chinuch, Rav Katz’s vision continues to guide the Yeshiva, and our Talmidim, both while in the Yeshiva and in their years beyond.
With his office door open, the Rosh Yeshiva worries at all times about the general wellbeing and growth of the Talmidim, while giving shiurim in Gemara, Rambam Hilchos Teshuva, and other Inyanei Hashkafa.
Living a short walk from the Yeshiva, Rabbi and Mrs. Katz always have an open door for Derech Etz Chaim Talmidim and Alumni, both on Shabbos and during the week.
Rav Sheftel Weinberg

A scion of the dynasty of Chassidus Slonim; cultivated by his Rebbe, Rav Mottel Tzukerman ZT”L, molded by his grandfather, Rav Chaim Stein ZT”L Rosh Yeshiva of Telz and inspired and taught by his grandfather Rav Yaakov Weinberg ZT”L, Rosh Yeshiva of Ner Yisrael in Baltimore, Rav Sheftel embodies a unique combination of Mesorah which compounded with a broad education and an analytical mind, makes him an amazing accessible resource to all of the Talmidim at Derech Etz Chaim. He demands excellence, clarity, and knowledge from his students, and it is the theme of his many daily Shiurim in Iyun, Bekiyus, Chumash, and the Rambam’s Sefer HaMitzvos.
Beyond his Shiurim, his day is filled with private meetings with Talmidim, and in small groups to discuss their questions, ranging from the basics: Shabbos, T’filla, Ma’amad Har Sinai, to the advanced: Korbanos, Tum’a and Evolution. All are explained clearly and with a logical methodology that has become his hallmark.
Rav Sheftel is known for his “sophisticated answers to sophisticated questions” and his incredible connection to his Talmidim that lasts for years beyond their time in Yeshiva.
Rav Moshe Stav

Rav Moshe Stav was born in Yerushalayim. He learned in Yeshivas Kol Torah under Hagaon Rav Shlomo Zalman Auerbach, ZT”L, and in Yeshivas Knesset Chizkiyahu (Kfar Chasidim) under Rav Mishkovski, ZT”L. He continued his learning in Kollel Untermann under Hagaon Rav Zalman Nechemya Goldberg, ZT”L, and afterwards in Yeroham, a development town in southern Israel, where he also taught Torah to the community.
Rav Stav , was a Maggid Shiur at Yeshivat Kerem B'Yavneh for 30 years and has Talmidim all over the world. He now says the highest Shiur at Derech Etz Chaim with Talmidim able to approach him throughout the day and benefit from his broad, clear knowledge of Torah. In his shiur, he fosters his Talmidim's ability for independent learning, and provides them with a Derech of clarifying concepts through carefully analyzing the language of the Rishonim and comparing their opinions. In addition, he delivers a number of Shiurim in Hashkafa and Lomdus (such as Maharal, Kuzari, and Shev Shmaisa), often presenting an original, unique approach. Rav Stav lives close to the Yeshiva in Har Nof, and his presence and attentive ear allow for the forming of warm, lasting relationships with the Talmidim.
Rav Moshe Eliyahu Rosenbaum

Born in Switzerland, R' Moshe studied both in Eretz Yisroel at Kol Torah and Ponvitch Yeshiva, as well as in the United States at Ner Yisroel. Before making Aliyah and joining Derech Etz Chaim in 2000, Rabbi Rosenbaum taught Torah studies to high school students in Europe and the United States, while earning his MBA and engaging in business. R' Moshe currently teaches Navi to first year students and Gemara Bekiyus to the Shana Bet.
Rav Asher Labell

Rav Asher Labell is a Morning Seder Maggid Shiur rebbe for the first year Talmidim, and coordinates the Derech Etz Chaim Poland Trip. Rav Asher was raised in Har Nof, Yerushalayim to Olim parents. He learned under Rav Asher Rubinstein ZT”L  before moving on to the Mir Yeshiva and Rav Eitan Yoffen’s Chabura. Shortly after he was married, Rav Asher began tutoring at Derech Etz Chaim and immediately became a favorite of the Talmidim. Not only in his style of learning but his open home and famous Oneg’s right down the block from the Yeshiva.
Rav Yosef Penner

R’ Yosef Penner comes from a renown Chinuch family, (his father, Rabbi Menachem Penner served as a Rav and is Dean of RIETS), was born and raised in Queens NY. After learning in Eretz Yisrael R’ Penner continued on to Yeshiva University and upon graduation moved with his family back to Israel and continued to learn in the Gruss Kollel. He received Semicha from Yeshivas Rabbeinu Yitzchak Elchanan .
At Derech Etz Chaim R’ Penner places a prominent role, giving the advanced Bekiyus Shiur during afternoon Seder and coordinates and gives shiur at Night Seder.
Rav Avraham "Hami" Alexander

R' Avraham “Hami” Alexander hails from Monsey NY. After learning in Eretz Yisrael he continued on to learn for several years under Rav Mayer Twerski at Yeshiva University and then continued to the Gruss Kollel in Yerushalayim where he completed his Semicha. Rav Hami is thea Shana Alef Rebbe working with the upper level Talmidim to help prepare them for Rav Stav's morning shiur. He recently moved to Har Nof to be close to Yeshiva and will be in the Beis Medrash all day while also giving shiur during night Seder. 
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