He is the author of several works of Jewish law, such as Derech Emunoh ("The Path of Faith"), on agricultural laws, Derech Chochmoh ("The Path of Wisdom"), on the laws of the jewish temple rites, and Shoneh Halachos (a systematic presentation of the popular work Mishnah Berurah). His Halakhic rulings regarding prayer are recorded in Ishei Yisroel.
He is the son of Rabbi Yaakov Yisrael Kanievsky ("the Steipler"), the son-in-law of Rabbi Yosef Sholom Eliashiv, and nephew of Rabbi Avraham Yeshayahu Karelitz (the Chazon Ish), all prominent halakhic authorities of the 20th century.
Thousands of people visit the holy rabbi yearly, seeking Torah oriented advice on various topics.
He is often contrasted with his father-in-law, Rabbi Yosef Shalom Eliashiv, with the two figures symbolizing subtle religious and political differences between the Haredi communities of Bnei Brak and Jerusalem.
Rabbi Kanievsky is known to refrain from engaging in politics.
In March 2008, Rabbi Kanievsky responded to a query from the heads of a yeshiva in Bnei Brak as to whether they should fire an Arab employee, ruling, "According to Halacha, one shouldn’t employ Arabs, especially not in yeshivot." The question was asked in the aftershock of the Mercaz HaRav massacre and Kanievsky's response was based on the importance of safety and security in Halakha.
Rabbis endorse 'educational' initiative to prepare livestock for Pessah sacrifice. 'Jews should live around the concept of waiting to reinstate bringing sacrifices on the holiday'
Apr 07, 2011; JONAH MANDEL Jerusalem Post 04-07-2011 Rabbis endorse 'educational' initiative to prepare livestock for Pessah sacrifice. 'Jews...