Thousands gathered in Jerusalem at the final resting place of Rabbi Jonathan Sadler, Wednesday.
Sadler and his little sons, Gabriel and Arieh, were victims of the worst school shooting in modern French history, along with eight-year-old Miriam Monsenego, daughter of the principal at the Jewish school where the attack took place.
At the service, Miriam's brother cried out, "God, enough! Enough to our sadness. Enough!"
"What is the sense of killing three children at the age of three or five or six?" Israeli President Shimon Peres asked. "What does it serve? Where does it lead? There is no good answer."
CBN News Mideast Bureau Chief Chris Mitchell was at the funeral and said the murders have profoundly affected the nation.
"There was also a comment by one lady at the funeral who said that this, you know what Jews feel when somebody pricks their finger, the head feels it, and it's like this is a sense that Jews collectively, not only here in Israel, but around the world are suffering when Jews are targeted just for being Jews," he said.
Meanwhile, French authorities said the suspect in the killing spree is dead.
Mohammed Merah, a 24-year-old French citizen of Algerian descent who claimed ties to al Qaeda, was killed by police Thursday in a standoff at the suspect's apartment building.
Merah is believed to have killed seven people in other recent attacks in France, including two deadly attacks on French paratroopers.
Officials said he was affiliated with the Belgian Sharia group Forsane Alizza, meaning "The Knights of Glory." Merah also spent time in Afghanistan and Pakistan.
There's been international outrage following the attack.
"We join the government of France in condemning this unprovoked and vicious act of violence," State Department Spokeswoman Victoria Nuland said.
The latest attack on Jews in Europe prompted some Israeli leaders to warn French Jews to leave France for Israel.
"Jerusalem's Mayor Barkat made a call to French Jews [saying] that if they want to come here to Jerusalem they'll have open arms to have them come here to the city or to Israel itself," Mitchell said.