Our theology cannot be changed, it is based on the Bible.
So you could say our theology is locked, but methods can be changed. Look in the four Gospels and the book of Acts how God used different methods to connect with different situations. Jesus in Matthew, Mark, Luke and John did not use the same words or prayer in the many situations. The Holy Spirit in the book of Acts (written by Luke) did everything in a different way, but always exalting Jesus and the Gospel.