On the issue of the sexuality of Jesus, the traditional understanding of Christian churches and theologians is that Jesus did not marry and remained celibate until his death. That has not prevented speculation about alternative and fringe theories of his sexuality. The Gospels and the New Testament reveal little on the subject. Jewish background In first century Judaism, sexual immorality included incest, homosexuality, adultery and bestiality, according to the rabbinic interpretation of Genesis 2:24, i.e., "a man shall leave his father and his mother" forbids a man from having relations with his father's wife and his own biological mother; "cleave to his wife" forbids a man from having more than one wife, having relations with another woman, or having same-sex relations; and "they shall become one flesh" forbids a man from having relations with non-human beings (such as animals). Jesus states in the gospels that he came "not to abolish, but to fulfill" Jewish law, and at his various trials, no one could testify that Jesus broke Jewish laws (Matthew 5:17, Matthew 26:59–60). Heterosexuality Mary Magdalene The non-canonical 3rd-century Gospel of Philip, using Coptic variants of the Greek (), describes Jesus' relationship with Mary Magdalene. The gospel uses cognates of and Coptic equivalents to refer both to the literal pairing of men and women in marriage and sexual intercourse, but also metaphorically, referring to a spiritual partnership, and the reunification of the Gnostic Christian with the divine realm. The Gospel of Philip mentions Mary Magdalene as one of three women named Mary "who always walked with the Lord" (Philip 59.6–11). The work also says that the Lord loved her more than all the disciples, and used to kiss her often (Philip 63.34–36). Author John Dickson argues that it was common in early Christianity to kiss a fellow believer by way of greeting (1 Peter 5:14), thus such kissing would have no romantic connotations. Kripal writes that "the historical sources are simply too contradictory and simultaneously too silent" to make absolute declarations regarding Jesus' sexuality. Bart Ehrman, a scholar of the Greek New Testament and early Christianity, concludes that historical evidence says nothing at all about Jesus' sexuality—"certainly nothing to indicate that Jesus and Mary had a sexual relationship of any kind". Ehrman says that the question people ask him most often is whether Mary Magdalene and Jesus of Nazareth married each other (after the claim was popularized in The Da