To say doctrine doesn't matter, only how you live matters, is itself a doctrine. It's the doctrine of salvation by works.
Timothy KellerThe common moral framework: Do anything as long as it does no harm to others. Problem: Whose definition of harm?
Timothy KellerIf you try to add to God's salvation you subtract. If you try to add to God's salvation you subtract. If you try to merit God's salvation you haven't believed at all, even if you try to do a little bit.
Timothy Keller