Book of Acts, Chapter 1, Verses 6-8 - Pentecostal Power
Ordinary people were able to do extraordinary things because the Spirit of God was at work in their lives.  The ministry of the Holy Spirit is not a luxury; it is an absolute necessity 
Book of Acts, Chapter 1, Verses 6-8 - Missionary Intent
That the residents of Samaria hear the gospel was more important to Jesus than the restoration of the kingdom to Israel would have been beyond the disciples’ imagination. 
Various Ways of Looking at Acts (Continued (Blog #6)
Step by step the gospel message moves from Jerusalem to Rome. The missionary effort was not easy. Persecution, personal disagreements among leaders, and people backsliding did not stop the missionary effort.
Various Ways of Looking at Acts (Continued) Blog#3

Acts has much divine activity. God was breaking in on people of various cultures and backgrounds. Luke was especially concerned that his readers understand this.