You could start by looking at this short thread on New Covenant Theology. I have one response in that thread that might be of some help.

Remember this basic and fundamental truth, which the apostle James wrote under the divine inspiration of the Bible: James 4:12 (ASV) "One [only] is the lawgiver and judge, [even] he who is able to save and to destroy: but who art thou that judgest thy neighbor?." (cf. Jh 5:22,30; 8:16,18; 12:49,50 and cp. Heb 12:21-26)

Also, there are some excellent articles on this subject here: Praxis - The Doctrine of the Christian Life.

Lastly....