Unfortunately Alan I am not talking about human logic here, I am talking about those inner feelings which you call 'conscience'. There are many people whose 'conscience' exhorts them to support a certain 'moral' stance which can be diametrically opposed to others, who would claim that their 'conscience' leads them to accept a different 'moral' stance, and with the same integrity. People of any or no religion fit into either of these categories.
Hence I would question the whole idea of 'conscience' being the arbiter of what is right/wrong in any objective sense at all.
And so, the honest question I asked you, and one which you have not provided any satisfactory answer to, is whose conscience decides what is right and what is wrong?
All I have received back from you are platitudes which simply reflect your conviction that by accepting your version of the Christian God this will make everything clear to me. This is simply an assertion that you are right, and other people with opposing convictions must be wrong. Alan, this is no way to construct an argument, especially to people like me, who are not party to your assertions.
Remember I have no belief in any God(or Devil) unless and until evidence accrues that any exist. Hence such a sentence as "When we accept God's amazing grace, the Devil's scales of deception will fall away." is of no particular use or meaning to me. If you really want to connect with others who do not share your beliefs, I would humbly suggest you attempt to engage cogently with arguments and questions rather than rely on simple assertions and a proselytising attitude.
Unless, of course, you are incapable of doing so...
I believe that every human being has a natural awareness of what is good and what is bad, but they also have a natural tendency to override this awareness in order to indulge in some form of self centred activity. Being a Christian, I can identify the awareness of good and bad with our God given conscience, and our tendency to override it as the temptation of the Devil. The Devil will use any logical argument to tempt humans into doing what is against God's will.
Again, no logic involved, Alan. Plenty of people feel that their 'conscience' leads them to distinguish between right and wrong. And many of them, I suggest, might well take a different stand to yourself on matters of morality. I also suggest that many, if not most of these would also feel that their 'consciences' are not being overridden by their own self interest. Some of them may also, like you, believe that their 'consciences' are God given, and that the 'consciences' of certain other people, (perhaps ones like you), have been overridden by the temptation of the Devil.
Notice, Alan, I'm talking about people's feelings and beliefs here, not logic.
So, although from your position you won't see it like this, from my position the idea of 'conscience' can certainly be important for each individual but has nothing to add to the argument for an objective morality at all.