Because the Holy Spirit played a dominant role in the growth of the church we learn the reason why the early Church had power. Churches are filled with man-developed programs that were imitated by the world and not through Spirit of God.
We learned that the early Church moved in the power of the Holy Spirit because the faith they had behind the Name of Jesus. Miracles, wonders and signs were manifested because of the Name.
There are three vital keys we see through out the book of Acts that helps us understand why the first century church moved in the power of God. The first key is: The Word..