Chapter 19, verses 7-9
7
They were about twelve men in all. 19:8 He entered into the synagogue, and spoke boldly for a period of three months, reasoning and persuading about the things concerning the Kingdom of God.
9
But when some were hardened and disobedient, speaking evil of the Way before the multitude, he departed from them, and separated the disciples, reasoning daily in the school of Tyrannus.
