For 13-year-old Dovid Raden of Staten Island, N.Y., the question of what to do with his bar mitzvah money was easy to answer: According to the Israeli newspaper Yediot Achronot, he gave all $6,000 of it to 12-year-old Yochai Levi of Sderot, Israel.

The Chabad Terror Victims Project helped facilitate the exchange so that the victim of a Palestinian rocket attack could buy a new wheelchair. …