There is a most interesting debate taking place on-line within the Churches of Christ. The debate is centered upon two propositional statements.
Propositional Statement #1: The New Covenant writings are the divine pattern which must be followed for both fellowship and salvation.
Propositional Statement #2: The New Covenant writings contain specific requirements and expectations of our God, few in quantity, that are essential for both fellowship and salvation.
Check out the debate at http://www.zianet.com/maxey/pattern.htm