What you’ve raised deals with the modern idea that right and wrong can somehow be different in different societies in different places and at different times. If you aren’t careful with how you describe moral issues, there can appear to be some truth in that idea – for example, is it moral to eat finger foods with your left hand? Not in some areas of the world!
But that’s only because of careless use of language. The truth is that right and wrong are always the same, from place to place and across time. A particular concrete expression of right and wrong might seem to change, but that is always because of sloppy descriptions or misuse of language.
In the past, some Catholic bishops have said that it was immoral for Christian women to wear their hair long. At other times and in other places, some Catholic bishops said that it was immoral for Christian women to wear their hair short. Both sets of bishops were correct, but right and wrong didn’t change. What did? The meaning society set on women’s hair lengths. At the time of those discussions, prostitutes were known by the length of their hair (in some places at some times, prostitutes wore long hair; in other places at other times, they wore short hair).
The true right and wrong was: Christians don’t pretend to be prostitutes, because prostitution is immoral.
But someone reading the two different sets of bishops’ writings might think that right and wrong had changed, at least as applied to hair length.
Right and wrong are absolute; they do not change according to the circumstances. It is always wrong to commit murder; it is always wrong to commit adultery; it is always wrong to steal. Different cultures can set standards for cultural things (appropriate hair length, dress and nudity standards, which hand(s) to use for eating food, and so on), but they cannot change right and wrong. The Nazis’ treatment of Jews and other minorities was wrong, no matter what the individual persons involved thought, and no matter what society taught. A man who beats his wife is wrong, even if she agrees that he has that right and even if he has a religious book to back him up. Torture is evil, no matter who says otherwise. Slavery was wrong, even though society said otherwise.
God is good; evil is opposed to Him. And God does not change.