Ministers are given to apostles (Acts 20:4–5).
According to Luke 10:1, when Jesus sent out the 70 apostles, He sent them out in pairs. They didn't have an entourage. Likewise, in Acts 13:1-3, Saul and Barnabus set out on their first missionary journey as just the two of them alone. So did Paul and Silas, as well as Barnabus and John Mark, later on (Acts 15:39-40). They started out with just two, and then more eventually came along, as their ministry and responsibilities grew.
