What is interesting to me is the connection he makes with the training of children. The church has trained them to be sentimental. Sentimentalism (the overemphasis of emotions) in the church makes it easier for Christians to find something with which they feel comfortable rather than which accords with truth from Scripture.
If you are unfamiliar with the discussion about Rob Bell, google it. I particularly suggest this review. It’s long (and I haven’t read the whole thing), but it’s been summarized elsewhere and seems to be a good one.