Loving God, Equipping People, Mentoring Leaders, Reaching Nations
The third function or role of an apostle is to encourage or strengthen the church. We see this in several places in the book of Acts.
After preaching the Good News in Derbe and making many disciples, Paul and Barnabas returned again to Lystra, Iconium, and Antioch of Pisidia, where they strengthened the believers. They encourage them to continue in the faith, reminding them that they must enter into the Kingdom of God through many tribulations. Acts 14:21-22
So they traveled throughout Syria and Cilicia to strengthen the churches there. Acts 15:41