Acts 18:25

23Having spent some time there, he departed and went through the region of Galatia and Phrygia, in order, establishing all the disciples.

24Now a certain Jew named Apollos, an Alexandrian by race, an eloquent man, came to Ephesus. He was mighty in the Scriptures.

25This man had been instructed in the way of the Lord; and being fervent in spirit, he spoke and taught accurately the things concerning Jesus, although he knew only the baptism of John.

26He began to speak boldly in the synagogue. But when Priscilla and Aquila heard him, they took him aside, and explained to him the way of God more accurately.

27When he had determined to pass over into Achaia, the brothers encouraged him; and wrote to the disciples to receive him. When he had come, he greatly helped those who had believed through grace;