1 Corinthians 16:12

16:12 With regard to our brother Apollos: I strongly encouraged him to visit you with the other brothers, but it was simply not his intention to come now. He will come when he has the opportunity.

Acts 18:24--19:1

Apollos Begins His Ministry

18:24 Now a Jew named Apollos, a native of Alexandria, arrived in Ephesus. He was an eloquent speaker, well-versed in the scriptures. 18:25 He had been instructed in the way of the Lord, and with great enthusiasm he spoke and taught accurately the facts about Jesus, although he knew only the baptism of John. 18:26 He began to speak out fearlessly in the synagogue, but when Priscilla and Aquila heard him, they took him aside and explained the way of God to him more accurately. 18:27 When Apollos wanted to cross over to Achaia, the brothers encouraged him and wrote to the disciples to welcome him. When he arrived, he assisted greatly those who had believed by grace, 18:28 for he refuted the Jews vigorously in public debate, demonstrating from the scriptures that the Christ was Jesus.

Disciples of John the Baptist at Ephesus

19:1 While Apollos was in Corinth, Paul went through the inland regions and came to Ephesus. He found some disciples there