Acts 8:6-8

Philip also could perform miracles like Jesus and the apostles. He cast out demons and healed paralyzed and lame people. These signs attracted the attention of multitudes of Samaritans and supported Philip’s profession that God was with him. Perhaps the fact that the Jerusalem Jews had rejected Philp made him appealing to the Samaritans since they too had experienced rejection by those Jews. Again, deliverance brought rejoicing (cf. Acts 2:46-47).

"It is not too difficult to imagine what would have happened had the apostles at Jerusalem first been the missioners [sic] to Samaria. Probably they would have been rebuffed, just as they were rebuffed earlier in their travels with Jesus when the Samaritans associated them with the city of Jerusalem (cf. Luke 9:51-56). But God in his providence used as their evangelist the Hellenist Philip, who shared their fate (though for different reasons) of being rejected at Jerusalem; and the Samaritans received him and accepted his message." [Note: Longenecker, p. 359.]