He was also known for his Talmudic erudition, his sermons and rousing High Holiday cantorial services (chazzanut) in the Yeshivah synagogue, specifically Ne'ilah.
On 18 May 2008, he explained at a Shabbat gathering that he was the forerunner and organiser of the Lag B'Omer Parade in 1942 and personally arranged the event as a request from Rabbi Yosef Yitzchok Schneersohn.
[1]Rabbi Groner died on the morning of Monday, 7 July 2008, aged 83;[1] and was buried on the Mount of Olives in Jerusalem.
Groner was a major figure posthumously in the Royal Commission into Institutional Responses to Child Sexual Abuse.
[2] The highest profile of these was David Cyprys,[3] who it was claimed Groner had tried to 'cure' from his abusive ways, and had tried to manage rather than report to police.