My men's group has been going through Steve Farrar's classic, Point Man. Today we talked about spiritual bulimia, which is taking in God's Word, but never letting it change you. We who are part of Bible churches are in particular risk of developing spiritual bulimia, because we are so easily confused about what the point of all our biblical study is. Many of us assume that the goal is to move from spiritual ignorance to spiritual knowledge. Spiritual knowledge is important, but it's only the intermediary step. The goal is to move from ignorance to knowledge to obedience.
The question, in other words, is whether we will be a tree or a pipe. Both conduct water through their structures, but only the tree is fundamentally changed by the interaction.