From this statement, then, the interpreter can interpret the issue, and using this verse as a guide he can sort through all the varied details in the book of Acts. The Purpose of Acts Basic to this study is an understanding of Luke's purpose in writing the book of Acts. His purpose directed his style. The book of Acts, then, is a transitional book, and as such it is unique. It bridges the gap between the old dispensation and the new, from God's dealings primarily and almost exclusively with the Jews to his dealings primarily and almost exclusively with the Gentiles.
Acts is a transitional book, and as such it is unique.
The ultra-dispensationalists divide the book into different dispensations. This transition period was necessary for at least two reasons. The first is the need for a foundational period. For them, by the nature of the case, Spirit baptism had to come subsequent to salvation, for it first occurred on Pentecost. Such was the case with the apostles.