Acts 18:23-28

MLV(i) 23 And having spent some time there, he came out and went through the region of Galatia and afterwards Phrygia, further strengthening all the disciples.
24 Now a certain Jew, Apollos by name, from Alexandria by birth, a cultured man, arrived in Ephesus, being mighty in the Scriptures. 25 This one was instructing people in the way of the Lord, and being zealous in his spirit, he was speaking and teaching accurately the things concerning the Lord, but only knowing the immersion of John. 26 And he began to speak boldly in the synagogue. But when Aquila and Priscilla heard him, they took him over to themselves and expounded to him the way of God more accurately. 27 Now while planning to go into Achaia, the brethren exhorted him and wrote to the disciples to accept him when he came. He supported many who had believed through the favor of God; 28 for he was thoroughly and intensely refuting the Jews in public, showing through the Scriptures that Jesus was the Christ.

{May, 55 - May 58 AD. Ephesus. Paul’s Letter to the Galatians is written.}