His lineage traces back to Reb Aharon, the Rav of Breslov, and Reb Shmuel Yitzchak, the Rav of Tcherin, both of whom were among the most prominent followers of Rebbe Nachman.

He received Smicha from Rabbi Avraham Sternhartz, recognized leader of Breslov Chassidus in Russia and Jerusalem and from Rabbi Avraham Yaffen, dean of the Bais Yosef yeshiva (Novardok) in Europe and America.

His penetrating mind and relentless zeal enabled him to achieve a mastery of all fields of Torah-learning including the Talmud, Shulchan Aruch, Chassidic teachings, and not least, the Kabbala.

Rabbi Moshe Feinstein often discussed difficult questions in Jewish law with Rabbi Rosenfeld; these discussions would frequently continue throughout the night.

In 1964 during the height of the Cold War,  Rabbi Rosenfeld led the first group of Breslovers from America to Uman

He left a legacy of over 1,000 recorded lessons and lectures from his vast knowledge of the Talmud, Midrash, Zohar, Kabbalah and Rabbi Nachman's teachings in classes attended by Sefardim and Ashkenazim alike.

He devoted himself to collecting funds to support needy families in Israel, build the Breslov Yeshivah in Jerusalem and publish Rebbe Nachman's works.

He pioneered the translation of Rebbe Nachman's teachings into English, starting with Rabbi Nachman's Wisdom, translated by Rabbi Aryeh Kaplan.

He  was very close with the Rabbi Menachem Mendel Schneerson, the Lubavitcher Rebbe and learned together from 1951 until the year before Rabbi Rosenfeld passed away in 1978.

He made his over fifty trips to the Holy Land, and in his first trip in 1949 , he met with Rav Avraham Sternhartz, who instilled in Rabbi Rosenfeld the burning need to spread Rebbe Nachman's teachings in America. This became his life's mission, and for thirty years he was a pioneer in the baal teshuvah movement in the United States -- all the while introducing more and more people to Rebbe Nachman's teachings.

He had an immense love for the Holy Land and wished to settle there himself. The one thing which always held him back was the new students that kept joining his classes each year. He once decided that should a whole year go by without a new student being attracted, he'd move to Jerusalem. Stricken with cancer at age 56, he finally moved to Jerusalem in the summer of 1978, thereby giving himself a few months to prepare for his passing.

The 11th of Kislev is the yahrzeit of Rabbi Zvi Aryeh Rosenfeld z"l. He brought many to the teachings of Rabbeinu Zal. He enriched every mitzva and every nuance of kedusha with down-to-earth excitement, total faith and bitachon. We are sincerely grateful for a rabbi who was one-stop source for amazing ruchnious and gashmious advice. So many years after his passing we still feel a deep void.