8 He entered the synagogue and for three months spoke out boldly, and argued persuasively about the kingdom of God. 9 When some stubbornly refused to believe and spoke evil of the Way before the congregation, he left them, taking the disciples with him, and argued daily in the lecture hall of Tyrannus. 10 This continued for two years, so that all the residents of Asia, both Jews and Greeks, heard the word of the Lord. 11 God did extraordinary miracles through Paul, 12 so that when the handkerchiefs or aprons that had touched his skin were brought to the sick, their diseases left them, and the evil spirits came out of them.

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.