for he refuted the Jews vigorously in public debate, proving from the Scriptures that the Christ was Jesus.
In context
26He began to speak boldly in the synagogue; and when Priscilla and Aquila heard him, they took him aside and explained the way of God to him more accurately. 27When he wanted to cross over to Achaia, the brothers encouraged him and wrote to the disciples there to welcome him. On arriving he was a great help to those who through grace had believed, 28for he refuted the Jews vigorously in public debate, proving from the Scriptures that the Christ was Jesus.