“Then Judas Maccabeus marched against Carnaim and the temple of Atargatis. He slaughtered twenty-five thousand people.”
Atargatis was a sacred fish fertility goddess of the Syrians. Apparently there was an Atargatis temple at Carnaim in the Gilead, since there might have been a lot of Syrians there. Judas and his men killed 25,000 here, a large number of people to be in one place.