"Progressive Christianity" is difficult to define, but easy to spot. There are a variety of different ideas in progressive churches, but the one thing they have in common is that they have abandoned the idea that the Bible is true and reliable.
These days, many who claim the name of Jesus are also politically and theologically "progressive." They don't view God, Jesus, or the Bible in the traditional sense of what Christians have believed from the first century forward. They often substitute their own views for those found in Scripture. For this reason, it's important to be able to compare progressive beliefs with Scriptural truths.