I am being very serious in this response:
Nobody knows the true answer to your question. This is why Christians are charged to search the scriptures and learn for themselves how they are to live. It is also why there are so many denominations and libraries full of books arguing 8 million sides of the issue.
The logic of this statement implies that it is impossible for a Christian to know with certainty what God wants and that sin is not real, but only subjective.
In reality, 99% of Christians - Catholic, Orthodox, Anglican and Reformed - agreed on almost every last detail of this question until the 1930s.