Blackburn provides examples of Old Testament moral criticisms, such as the phrase in Exodus 22:18, which he says has "helped to burn alive tens or hundreds of thousands of women in Europe and America": "Thou shalt not suffer a witch to live." He states that the Old Testament God apparently has "no problems with a slave-owning society", considers birth control a crime punishable by death, and "is keen on child abuse".[76] Additional examples that are questioned today are: the prohibition on touching women during their "period of menstrual uncleanliness (Lev. 15:19–24)", the apparent approval of selling daughters into slavery (Exodus 21:7), and the obligation to put to death someone working on the Sabbath (Exodus 35:2).[77]