Considered in the Bible to be against the moral directives of the day by persons writing their own opinions on the subject.  You probably refer to Leviticus, as most Christians do.  Those proscriptions were written for the Levites, not Christians.  Christians were thousands of years away from even being invented.  Why Christians even read the Old Testament is beyond me. That was written by and for those of the Abrahamic religions of the day (Jews and Arabs). Christ came along much later, and only then did people start calling themselves "Christians," or followers of Christ.  Interestingly, even then, they were Messianic Jews for almost-400 years, until a Roman Emperor compiled his own version of the Bible, which is still largely in use today.  So you may follow the opinions of ancient scribes if you wish, but just know of what those consist, please.