So, everybody has heard of the ancient gods at least once in their life.
Ovid depicts the gods as being very wishy-washy with their standard of ethics. When the humans do good they reward them but when they are bad they are very cruel. The thing that makes you question the gods is that, they did to humans what was convenient for them not what was best for the humans.
For example the story of Jupiter: Jupiter raped a virgin and he then turned her into a heifer to hide his adultery from his wife. He then gives the “Heifer” to his wife.
You see these gods had complete control over the people. The citizens of the world were at their complete mercy. The gods could do anything they wanted as long as they could either justify it or hide it.
So I think the gods ethics really varied on what they thought they should be at the moment.