"The book of Acts is a record of the struggle of the church to be the church" (Allan Boesak).
Sometimes we think it was all great at the beginning, but then we ought to just read the New Testament. There are many stories of struggles and conflicts. Paul and Peter had very different views - and they both had to do lots of new learning.
There are many dramatic scenes indicating God's presence and intervention.
But, just as God helped the church in the then struggle to be the church, so he will help us in the struggle to be the church in our day.