8 And entering into the synagogue, he spoke boldly during three months, reasoning and persuading [the things] concerning the kingdom of God. 9 But when some were hardened and disbelieved, speaking evil of the way before the multitude, he left them and separated the disciples, reasoning daily in the school of Tyrannus. 10 And this took place for two years, so that all that inhabited Asia heard the word of the Lord, both Jews and Greeks. 11 And God wrought no ordinary miracles by the hands of Paul, 12 so that even napkins or aprons were brought from his body [and put] upon the sick, and the diseases left them, and the wicked 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.