Mateo 12:27

The Pharisees’ "sons" cast out demons occasionally. These "sons" were probably their disciples or less likely the Jews more generally. In either case some Jews in Jesus’ day could cast out demons (cf. Acts 19:13). If the Pharisees asserted that Jesus cast out demons by Satan’s power, they would have to admit that their sons did so by the same power, something they would have denied.