From https://billmuehlenberg.com/2016/10/...eful-recovery/ posted yesterday (5th Oct).
The Demise of Theology (And Its Hopeful Recovery)
One can safely say that contemporary Western Christians may be the most theologically illiterate since the church began 2000 years ago. The woeful lack of basic theology and sound doctrine in so many churches today is coupled with a woeful biblical illiteracy.
The two go together of course. It is hard to have good theology if one knows very little about the source of good theology – the Bible. We expect the surrounding culture to be theologically malnourished, but it is a tragedy when the Body of Christ is also so spiritually sick.
Being theologically illiterate it should surprise no one that there is heresy in the church; except perhaps those who are theologically illiterate! But they'll deny it anyway.