Acts 18:18-21

18:18 And Paul [after this] tarried [there] yet a good while, and then took his leave of the brethren, and sailed thence into Syria, and with him Priscilla and Aquila; having shorn [his] head in Cenchrea: for he had a vow. 18:19 And he came to Ephesus, and left them there: but he himself entered into the synagogue, and reasoned with the Jews. 18:20 When they desired [him] to tarry longer time with them, he consented not; 18:21 But bade them farewell, saying, I must by all means keep this feast that cometh in Jerusalem: but I will return again unto you, if God will. And he sailed from Ephesus.

Acts 18:24-28

18:24 And a certain Jew named Apollos, born at Alexandria, an eloquent man, [and] mighty in the scriptures, came to Ephesus. 18:25 This man was instructed in the way of the Lord; and being fervent in the spirit, he spake and taught diligently the things of the Lord, knowing only the baptism of John. 18:26 And he began to speak boldly in the synagogue: whom when Aquila and Priscilla had heard, they took him unto [them], and expounded unto him the way of God more perfectly. 18:27 And when he was disposed to pass into Achaia, the brethren wrote, exhorting the disciples to receive him: who, when he was come, helped them much which had believed through grace: 18:28 For he mightily convinced the Jews, [and that] publickly, shewing by the scriptures that Jesus was Christ.