Acts 18:24, 26-27

A Jewish man by the name of Apollos arrived in Ephesus. He was a native of Alexandria and was recognized as an educated and cultured man. He was powerful in the Scriptures

He fearlessly preached in the synagogue. But when Priscilla and Aquila heard Apollos’ teachings, they met with him privately and revealed to him the ways of God more completely. Then Apollos, with the encouragement of the believers, went to the province of Achaia. He took a letter of recommendation from the brothers of Ephesus so his ministry would be welcomed in the region. He was a tremendous help to the believers and caused them to increase in grace.