8 And he went into the Synagogue, and for three months he was preaching there without fear, reasoning and teaching about the kingdom of God. 9 But because some of the people were hard-hearted and would not give hearing, saying evil words about the Way before the people, he went away from them, and kept the disciples separate, reasoning every day in the school of Tyrannus. 10 And this went on for two years, so that all those who were living in Asia had knowledge of the word of the Lord, Greeks as well as Jews. 11 And God did special works of power by the hands of Paul: 12 So that bits of linen and clothing from his body were taken to people who were ill, and their diseases went away from them and the evil spirits went out.
Matthew Henry's Commentary on Acts 19:8-12
Commentary on Acts 19:8-12
(Read Acts 19:8-12)
When arguments and persuasions only harden men in unbelief and blasphemy, we must separate ourselves and others from such unholy company. God was pleased to confirm the teaching of these holy men of old, that if their hearers believed them not, they might believe the works.