Haim Roet, who survived the Holocaust by hiding in a Dutch village, came up with the powerful idea to memorialize Jewish victims of the Nazis by intoning their names, died on May 22 at his home in Jerusalem. He was 90.

Mr. Roet worked to spread the idea, and during the early 2000’s Yad Vashem and the Knesset made reading the names of victims an integral part of ceremonies on Yom HaShoah.

“It is so important to gather the names,” Mr. Roet said in a video made by Yad Vashem, “so they don’t remain anonymous, and that each one of them will be remembered, and have a certain place — if not in a physical grave, at least a grave within our memory and the memory of the Jewish people.”