There is a difference between knowledge (the consciousness of an object) and the intrinsic evidence why it is so.
There is so much more to “knowing”, though, than what can be put into words. We know God through relationship, there is a knowing of security and freedom that is part of the whole of knowing. It is a connection.
To consider the knowledge of the moral character of an act as purely subjective is an error.
I agree completely, but even objectivity begins with a set of “givens”. For example, “theft is sinful” is an objective truth, for sure, but it is an objective truth
given our created human nature. For example, when we ask “Why is theft so hurtful?” the “given” is that people naturally need resources to survive and we expend needed energy to acquire resources, so theft of these resources is truly hurtful. In addition, since we have an innate desire to possess, which has a territorial aspect, we naturally react to invasion of our stuff, especially theft. Therefore, it is
objectively true that theft is immoral in the sense that it is hurtful to people.
However, the
thinking of a person who commits theft may be such that he does not see the objective truth. His
hearing that it is an “objective truth” will be far from sufficient for him to
know it as an objective truth. For example, he may have grown up in a culture where it is fine to steal from people of a different religion or ethnicity because those “others” don’t count as having an equal human dignity. If he steals, my own compulsion to punish this person or think that the person deserves God’s wrath is beside the point, and the compulsion itself is an enslavement. What Jesus calls us to do is correct the sinner, for sure, and such correction may involve seeking civil penalty, but even before doing so we are called to forgive. Jesus demonstrates such forgiveness from the cross; we can put aside our desire to punish and seek to understand people as they are, leaving all the “shoulds” aside, and then forgive.
Such understanding of people sometimes involves the
objective truth that people often look at situations subjectively, and seeing this disconnect is part of the realization that people do not know what they are doing when they sin. So yes, seeing moral character of an act as purely subjective
is an error, but such seeing of moral character as subjective
in itself involves a person who does not know what he is doing; he is to some degree disconnected from reason and Love.
Now, once I have said the above, a reader might agree, “yes, there is something to understand and forgive about people when they sin, including that they do not know what they are doing.” Or, on the other hand, that inner compulsion to punish wrongdoing, that urgency in seeing that it is so right that no sin go unpunished may instead be forefront, resisting any movement towards understanding and forgiving. The fact of the matter is that these two need not be mutually exclusive.