If we can establish that there’s a case for objective right and wrong, is it therefore logical or reasonable to argue that churches within Christianity need a consensus on moral issues?

This text is from a transcript of a talk by David Gooding, entitled ‘Are you Worth More than a Pig?’ (2007).

An interesting question. If one argues on the basis of our moral sense that God has put it in our hearts, and on the explanations and additions to it in the Ten Commandments and so forth—can we then say that we must get a Christian consensus on what is right and wrong in practical living—have I got you right?

I've argued that God has put his laws on our hearts (Hebrews 8:10). He's further expounded those laws in the Ten Commandments and in the New Testament. There is to be observed a moral growth in this respect. Just as you would teach a little child certain practices, but then when he grows up you will teach him a rather more advanced system of ethics, yes there is growth. So that, when it comes to life in society or amongst ourselves, we should not suppose that we as individuals have the last word on interpretation of the rules as given to us.

Therefore, we need to seek in all humility the help of all fellow Christians from the inside to help us understand God's rules; and not only understand his rules but how they are to be applied in actual circumstances. And we ought to listen to the critics from the outside as well, for they sometimes can point us to our inconsistencies and our irrationalities.