Book excerpt: "The ministry of the Holy Spirit is not a luxury; it is an absolute necessity," writes celebrated author and respected pastor Warren Wiersbe. In his first of two books covering Acts, Be Dynamic focuses on Peter's ministry, mostly in Israel and centered in Jerusalem. Through explaining Luke's record of the Gospel's advancement and church expansion, Wiersbe opens the door to understanding the work of the church today. Using hard-hitting quotes from recognized names like St. Augustine and John Bunyan, Wiersbe proves himself as a well-read author and gifted writer. The depth of his study is astounding, yet the accessibility of his text for every age group is evident as well. He proves what Luke intended-for Acts to be interpreted not as the apostles' glorious acts, but as the life-changing acts of the Holy Spirit. The same Spirit lives in believers today, the same God calls followers to expand His church, and the same basic problems still arise within the church, but the same power available then is still available now to change the nations.