Acts 18:23-28

And having spent some time there, he departed, and went through the region of Galatia, and Phrygia, in order, establishing all the disciples. Now a certain Jew named Apollos, an Alexandrian by race, an eloquent man, came to Ephesus; and he was mighty in the scriptures. This man had been instructed in the way of the Lord; and being fervent in spirit, he spake and taught accurately the things concerning Jesus, knowing only the baptism of John: and he began to speak boldly in the synagogue. But when Priscilla and Aquila heard him, they took him unto them, and expounded unto him the way of God more accurately. And when he was minded to pass over into Achaia, the brethren encouraged him, and wrote to the disciples to receive him: and when he was come, he helped them much that had believed through grace; for he powerfully confuted the Jews, and that publicly, showing by the scriptures that Jesus was the Christ.