9 and when certain were hardened and were disbelieving, speaking evil of the way before the multitude, having departed from them, he did separate the disciples, every day reasoning in the school of a certain Tyrannus.
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.
Matthew Henry's Commentary on Acts 19:9
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.