Acts 7:38

7:38 This is the man who was in the congregation in the wilderness with the angel who spoke to him at Mount Sinai, and with our ancestors, and he received living oracles to give to you.

Acts 19:9

19:9 But when some were stubborn and refused to believe, reviling the Way before the congregation, he left them and took the disciples with him, addressing them every day in the lecture hall of Tyrannus.