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                         Thou shalt not uncover the nakedness 
                          of a woman and her daughter, neither shalt thou take 
                          her son's daughter, or her daughter's daughter, to uncover 
                          her nakedness; for they are her near kinswomen: it is 
                          wickedness.  
                         
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                          Leviticus 18:17 
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                Incest is fairly comprehensively prohibited in Leviticus 18:6-18, 
                  and there was a natural dislike of incest, as of all sexual 
                  activity  though the greatest Christian scholars regarded 
                  it as being at the less serious end of the spectrum. Incest, 
                  even between mother and son, was far less serious than masturbation*. 
                
                  
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                       Lot and His Daughters with the burning 
                        of Sodom Beyond, 
                        attributed to Lazarus van Borchlot (c 1575 - c 1611) 
                        One daughter seduces her father, while the other pours 
                        more wine 
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                Much of the Old Testament is also remarkably tolerant of incest. 
                  Most of the key characters in the scriptures were credited with 
                  having participated. Among them were  
                
                  - Adam and his family; 
 
                  - Noah and his family; 
 
                  - Lot and his daughters (Genesis 19:30-38); 
 
                  - Abraham with Sarah his half-sister (Genesis 20:12); 
 
                  - Judah, with his daughter-in-law Tamar, innocently thinking 
                    she was a prostitute (Genesis 38:6ff); and 
 
                  - Amnon who raped his half-sister (another Tamar  2 
                    Samuel 13:1-20).
 
                 
                
                   
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                       Lot and his Daughters (1616), 
                        by Hendrick Goltzius 
                        The picture shows Lot being seduced by his daughters. 
                        The fox behind the tree symbolizes female cunning. Just 
                        visible n the background is the pilar of salt, Lot's late 
                        wife 
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                According to Deuteronomy 2:9 and 2:19, God gave the Moabites 
                  and the Ammonites special protection because they were descended 
                  from incestuous couplings  that of Lot and his daughters. 
                  Normal earthly taboos do not seem to apply in Heaven. According 
                  to many Christians, Mary is the bride of Christ as well as his 
                  mother. 
                
                  
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                       Incest clearly ran in Noah's family, 
                        as the genealogy below shows 
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                For many centuries the Church regarded mariages between even 
                  distant relatives as incestuous. Any marriage where the two 
                  spouses were related to each other within the seventh degree 
                  were considered incestuous. Fortunately, excemptions could be 
                  purchased - and among the royal and noble families of Western 
                  Christendom, very frequently were. 
                  
                  
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