The mother of an 18-year-old killed after he was trapped with his sister in a sand collapse on a Toms River beach Tuesday says she finding comfort in her religion and in the rescuers who tried frantically to rescue her son. “We had lots of people trying to help and we’re very grateful for that,” Angela Caverly told NJ Advance Media on Wednesday. “We know he’s with Jesus and smiling down on us.” Levi Caverly, 18, and his 17-year-old sister were digging a deep hole in the sand with Frisbees shortly after 4 p.m. near Seaview Roaad and Chadwick Beach, which is in the Ocean Beach III section of the…