Already at his Bar Mitzvah age, he had developed a Chassidic sensibility that led him to reject even permissible desires. At age 15 (1909), he arrived to study at the "Tomchei Tmimim" yeshiva in Lubavitch. Due to his young age, Rabbi Peretz initially studied at the branch in Schedrin under the renowned Mashpia, Rabbi Shaul Dov Zisslin. However, thanks to his innate Chassidic qualities, alongside his exceptional talents and sensitivities, Rabbi Peretz quickly immersed himself in the deep teachings of Torah and Chassidus.

During his "seven years of plenty" at Tomchei Tmimim in Lubavitch, Rabbi Peretz drank deeply from the wellsprings of Chassidus, acquiring vast strength and capacity to absorb without losing a drop. Throughout his yeshiva years, he dedicated himself not only to diligent study of Chassidus and prolonged prayer but also engaged in various forms of self-discipline regarding eating and sleeping.

In his final year at "Tomchei Tmimim," the administration sent him to the branch in Ramen, where he stayed with Rabbi Itche der Masmid, a devout and influential Chassidic figure. Rabbi Peretz continued his studies in "Tomchei Tmimim" until his marriage in 5676 (1916) to Hanya Chasha Havelin, the daughter of Rabbi Nachman Havelin, a Chassidic shochet (ritual slaughterer) in Semyonovka.

After their wedding, the couple settled in Semyonovka, where Rabbi Peretz’s main role became the "spiritual livelihood" of the town's Jews, although he also took on the trade of ritual slaughter for practical reasons.

In 5685 (1925), Rabbi Peretz moved with his family to Simferopol, the main city in Crimea, where he supported Jewish life and Torah observance under the direction of the Rebbe Rayatz. Officially, he served as the town's shochet, but he also strengthened the city’s Jewish community.

In 5687 (1927), Rabbi Peretz contracted a severe case of typhus, with his life hanging in the balance for months. At a critical moment, he even recited words of farewell to his family and the “Vidui” prayer, along with the "Ani Ma'amin" affirmations for each Chabad Rebbe. Despite the dire prognosis, Rabbi Peretz eventually recovered.

During his years in Simferopol, Rabbi Peretz inspired three or four minyanim (prayer groups) to draw closer to Chabad. In his fifth year there, a tense dispute arose when a candidate for the city's rabbinate—a fervent Mitnaged (opponent of Chassidus) named Berger—opposed Chabad. Rabbi Peretz openly resisted his appointment, which led to heightened conflict, forcing him to leave Simferopol in 5691 (1931) and settle in Leningrad.

During World War II, Rabbi Peretz and his family relocated to Tashkent, where he helped Jewish refugees. In those years behind the Iron Curtain, Chassidim referred to him clandestinely as "Achizrach."

Rabbi Peretz’s life was dedicated to spreading Torah and Chassidus, even in the face of personal hardship and opposition.

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