The goal is subjective but once a standard (goal) is settled on then all actions can be objectively determined to either be in line with that goal or not.
That is absolute morality which does not exist in my opinion. Even a Christians morality is objective to Gods subjective morality.
It's an interesting question to look closer into, 'objective and subjective'.
I just did a little thought experiment (which I've done before long ago). About trying ascertain some objective aspects of morality.
Consider first the fact: we have a nature, built into our genetics, the characteristics of our human nature as determined by the genes, and those are physically real. The characteristics that all humans then share from this genome have an objective quality, in that they are fixed real attributes. Some of the basic characteristics include a drive to find and eat food, and a drive to reproduce. We have an inbuilt objective set of goals, which are various things needed to survive, live, reproduce.
Next, it's not hard to then find out by experience whether certain rules of living -- laws -- support or work against those inbuilt objective goals. (
"goals" = built in needs, ala Maslow's hierarchy of needs)
Example: Do not murder. If this is broken it degrades our accomplishing our goals. If it is followed, it allows a chance to accomplish our goals.
With some logic and experience or careful thought experiment based on experience, one can see (or test) whether various rules/laws work well.
Example: Do not steal or defraud. What if everyone followed this law? What if most people broke this law?
A way to test any law/principle in thought experiment is available: Consider 2 alternative situations: If people widely followed the candidate law, would that then aid/help accomplish our innate goals, or would that work against our innate goals?
If people following the rule/law aids accomplishing our objective set of innate goals, and if breaking it harms our innate set of goals, then we have an law that objectively supports objective goals.
Next, we can learn by reflecting on history that human cooperation is very effective for accomplishing our mutual objective innate goals also. Groups that cooperate thrive over those that do not.
With time and effort you could even see, I found, the objective morality then in the summary of the intent of law as Christ stated it:
"In everything, do to others as you would have them do to you, for this sums up the law..." (Matthew chapter 7)
Objectively, for that person. Which, coincidentally, still makes it subjective.
That's kind of my point. All morality is subjective in nature, so the debate is a little useless in that regard. Although, I think whether or not God's morality is subjective would be up for debate...since, in the context of Christianity, there is only one God. Being the head honcho and all, I suppose that would make his word law above all else.