All paradoxes are the product of humans misunderstanding - intentionally or not - the representations they use for the represented.
Morality does not require a god, nor is it manmade.
Morality refers to a set of necessary behaviours that facilitate cooperative survival strategies. They are naturally selected behaviours that man encodes, using language.
These codes of conduct are considered ‘divine’ because they are so essential to the survival of social species. not only humans but ALL social species.
Man, subsequently, takes these codes and amends them. Man intervenes upon what has evolved to facilitate the development of more complex systems - adjusting nature to his needs.
Mosaic Laws are the first encoded amendments to moral behaviours.
God is used as a method of enforcing these amendments on a species that has not been naturally selected to abide by them.
If we call these amendment ethics, to differentiate them from moral behaviours that are naturally selected we can begin to understand where and how morals develop into ethical systems, based on human ideologies.
Ideologies are extensions of genealogies.
Genes to Memes.
For example, the ethical rules concerning adultery are necessary amendments that inhibit human sexual promiscuity and competitiveness, so as to make stable societies possible.
We can say the same for ethical rules prohibiting murder, or in-group violence, or violence in general.
In nature in-group violence is regulated by the dominant male, which has now been abstracted and institutionalized.
The current humanistic ideology, dominating the west, expands the concept of an in-group to include all members of the species.
We see, here, messianism and globalism at work.
So, is morality subjective?
No.
It is necessary.
So, it evolves and becomes ingrained within a species that practices cooperative survival and reproductive strategies.
Is it universal?
No, since it only applies to life and only life that practices cooperative survival and reproductive strategies.
Is morality objective?
Yes…since it is independent from all subjective desires and perspectives.
Are ethics, or amendments to these moral rules subjective?
Yes, because they are directed by manmade ideologies, with specific objectives.
Objectives that can be nihilistic, or contrary to survival, as in the case on nihilistic ideologies/dogmas.
How and why can such ideals survive?
Because they are useful for mass control and because the consequences are mitigated and absorbed by the collective - they are collectivized.
But, in time, such nihilistic ideologies do lead to self-annaihilation, if they are ever practiced as they are preached - which they rarely are - see Abrahamism, or Marxism.
Neither can practice its ideals because this would lead to certain death…so they develop excuses and justifications.