Why isn't experience enough to ground your faith?

Les explains that in Galatians Paul is defending his doctrine, not merely his person, unlike in Corinthians where he defended his apostleship against attacks. Les emphasizes that doctrine is not to be used loosely and has largely gone by the boards today. Many stress experience, and that is all well and good, but experience does not set your feet in concrete. It takes doctrine, the teaching, to provide a firm foundation. Without doctrine, you have nothing. Paul was refuting false doctrine and false teaching that had crept into the Galatian churches and every church he founded. This problem is not unique to Paul’s day; it has plagued Christianity through the centuries and is just as relevant today, because believers still fight the false teaching of legalism. Legalism is not just temple worship and Judaism; it comes in all shapes and forms and is always subtle. That is why experience alone is insufficient; doctrine is primary.