No, but you claim to subscribe to it, which means you claim to at least know something about it.
But if your knowledge about it is incomplete, then you cannot ever be sure about the rightness or wrongness of something, because it's possible that the something in question is something that an exception is made for in the absolute moral standard you subscribe to.
We all know something about it, otherwise we wouldn't be able to argue the concepts of moral right and moral wrong.
Without absolute morality, you cannot even argue morality...
Without absolute morality, there is no concept of goodness or badness...
That by itself proves its very existance. 


