[2] He was appointed to this post in 2003, after having served as a dayan, or Rabbinical Judge, of the Machzike Hadass community of Antwerp, Belgium.

He attended the local secular school in the mornings,[8] and took religious instruction with a private melamed in the afternoons.

[9] Before World War II, at the age of 12,[10] he escaped Slovakia on a Kindertransport,[5] arranged by Aron Grünhut[4] and Sir Nicholas Winton, leaving his parents and family behind.

Another student at the yeshiva was Moshe Sternbuch, who served alongside him as the Ra'avad (Rosh Av Beis Din) of Jerusalem.

When the Israeli government first came out with certain restrictions on citizens to protect the country from the coronavirus pandemic, such as limiting prayer quorums and other large gatherings of people, Weiss opposed those decisions, but retracted soon after.