The Christian doctrine of the Trinity has become a major focus of the contemporary gender debate, specifically in relation to . In 1977, George W. Knight III argued in a book about gender roles that the subordination of women to men is theologically analogous to the subordination of the Son to the Father in the Trinity. Australian theologian Kevin Giles has more recently responded that complementarians have "reinvented" the doctrine of the Trinity to support their views of men and women, suggesting that some complementarians have adopted a heretical view of the Trinity similar to Arianism. A vigorous debate has ensued, with some egalitarians moving towards the idea that there is "mutual dependence" within the Trinity, including "subordination of the Father to the Son", which must be reflected in gender role relations. Wayne Grudem has countered this by asserting that mutual submission in the Trinity cannot be supported by scripture and church history.