I appreciate the clarity of this:
6. However, the issue is not simply about civil liberties or human dignity or even about pastoral sensitivity to the freedom of individual Christians to form their consciences on this matter. It is about whether the Church is free to recognise same-sex unions by means of public blessings that are seen as being, at the very least, analogous to Christian marriage.
7. In the light of the way in which the Church has consistently read the Bible for the last two thousand years, it is clear that a positive answer to this question would have to be based on the most painstaking biblical exegesis and on a wide acceptance of the results within the Communion, with due account taken of the teachings of ecumenical partners also. A major change naturally needs a strong level of consensus and solid theological grounding.
8. This is not our situation in the Communion. Thus a blessing for a same-sex union cannot have the authority of the Church Catholic, or even of the Communion as a whole. And if this is the case, a person living in such a union is in the same case as a heterosexual person living in a sexual relationship outside the marriage bond; whatever the human respect and pastoral sensitivity such persons must be given, their chosen lifestyle is not one that the Church's teaching sanctions, and thus it is hard to see how they can act in the necessarily representative role that the ordained ministry, especially the episcopate, requires.
9. In other words, the question is not a simple one of human rights or human dignity. It is that a certain choice of lifestyle has certain consequences. So long as the Church Catholic, or even the Communion as a whole does not bless same-sex unions, a person living in such a union cannot without serious incongruity have a representative function in a Church whose public teaching is at odds with their lifestyle. (There is also an unavoidable difficulty over whether someone belonging to a local church in which practice has been changed in respect of same-sex unions is able to represent the Communion's voice and perspective in, for example, international ecumenical encounters.)
10. This is not a matter that can be wholly determined by what society at large considers usual or acceptable or determines to be legal. Prejudice and violence against LGBT people are sinful and disgraceful when society at large is intolerant of such people; if the Church has echoed the harshness of the law and of popular bigotry – as it so often has done – and justified itself by pointing to what society took for granted, it has been wrong to do so. But on the same basis, if society changes its attitudes, that change does not of itself count as a reason for the Church to change its discipline.