When outrage is n't enough . Ed and Mary Kassig urge them to release their son . Peter Kassig changed his first name to Abdul - Rahman when converting to Islam . ` ` We beg his captors to show mercy , '' his father says on videotaped message . ` ` Most of all , know that we love you , '' his mother says to son .
Ed and Mary Kassig urge them to release their son . Peter Kassig changed his first name to Abdul - Rahman when converting to Islam . ` ` We beg his captors to show mercy , '' his father says on videotaped message . ` ` Most of all , know that we love you , '' his mother says to son .