Actually, one of the most dangerous things we can do as Christians is to determine our theology by our experience, because no one’s experience is normative for the Christian life. We have to determine our theology from the Word of God, not from what we feel. Not only that, we are open to misunderstanding and misinterpreting the meaning and significance of the experiences we go through. That’s why we are called to check our experiences against Scripture, so that we define our faith by what Scripture says, not by what we feel or what we experience. If we rest our assurance on experience and not on the Word of God, we’re inviting all kinds of doubts to assail us in our pilgrimages. We need to seek authentic knowledge of our salvation, not just some warm and fuzzy experience.

RC Sproul