Christianity and Judaism are different religions. Why is that? After all, Jesus and the apostles were all Jews. What was the nature of the Judaism that prevailed in the 1st century AD? What was the view of God? How was Jesus Christ related to the Jewish God? How should biblical monotheism be interpreted in the light of Jesus’ claim to be the Son of God send from heaven?
It is an error to identify the gospel with any particular system or culture. A problem with the church being identified with the culture wars is a basic one: Christianity is not a culture. It is a faith centered around a person who has a real life, a life of significance because he is God incarnate and rose from the dead as he promised and is alive in heaven.