[1] After completing an eight-year course of studies under Rabbi Pinchas Hirschsprung, Rabinovitch received semicha from Montreal's Yeshivas Merkaz HaTorah in the city's first rabbinical ordination ceremony.

[13] Notable among his students at the college was Chief Rabbi Lord Jonathan Sacks,[14][15] who has cited Rabinovitch as his primary role model.

In 2015, together with a group of prominent Israeli rabbis, Rabinovitch established Giyur Kehalacha, an independent beit din offering conversions outside of the Chief Rabbinate.

[17][18] Rabinovitch published Halakhic rulings on various subjects, including organ donation, surrogacy, birth control, army service, Shabbat, and kashrut.

[19] His philosophical approach, influenced by Maimonidean rationalism, emphasized the connection between philosophy and Halakha, between Torah and scientific studies, and between theoretical learning and practical applications.

"Learned in War"), a collection of responsa dealing with Halakhic issues facing religious members of the Israel Defense Forces.

[26][27] The previous summer, he had also issued a ruling that Jewish soldiers should disobey any government orders to vacate West Bank army bases.