Gollancz produced a translation of the Hebrew Scriptures "for Jewish families, which adhered 'as closely as possible to the excellent Anglican version of the 17th century' (King James Version)"[4] He also translated from Hebrew and Aramaic the Targum to the Song of Songs.

Gollancz was later named minister emeritus of the United Synagogue and served as president of the Jewish Historical Society of England in 1905 and 1906.

[6] His service to the Jewish community included the creation of numerous synagogues to serve workers at industrial plants, visiting the sick and assisting the poor.

His 35-year-old son Leonard committed suicide jumping out of a hotel window in Torquay in a "moment of sudden impulse caused by nervous strain", after which Lady Gollancz suffered a stroke.

[7][9] Gollancz was buried at the Willesden Jewish Cemetery on 19 October, and the funeral was followed later in the day by a memorial service at the Bayswater Synagogue where he had ministered for so many years.