The thesis is the unchangeable soul’s sex is set by the bodily appearance at birth.
And thus that the body
cannot change naturally, as that would require the unchangeable soul to change.
Any change to the body has to be man-made, and is thus merely superficial, an interference with God’s Natural Order…
The refutation is that the body can and does change naturally in some cases. If it happened only once in the whole of human history, that would be enough for disproof. Either body and soul are distinct, or sex of the soul is mutable.
There is another refutation, just a bit more complex.
If one states that Intersex conditions are exceptional, that if a physical, biological condition is different from a psychological one, then one has to prove that Transsexuality has no biological basis, at least on the balance of probabilities. That it is at least probably wholly psychological. That Transsexuals do not have any body parts of the opposite sex in their natural state.
All of the evidence is to the contrary, viz:
Neuroimaging Differences in Spatial Cognition between Men and Male-to-Female Transsexuals Before and During Hormone Therapy by Scoening et al J Sex Med. 2009 Sep 14.
Male-to-female transsexuals show sex-atypical hypothalamus activation when smelling odorous steroids by Berglund et al Cerebral Cortex 2008 18(8):1900-1908;
Male–to–female transsexuals have female neuron numbers in a limbic nucleus. Kruiver et al J Clin Endocrinol Metab (2000) 85:2034–2041
Sexual differentiation of the human brain: relevance for gender identity, transsexualism and sexual orientation. Swaab Gynecol Endocrinol (2004) 19:301–312.
A sex difference in the human brain and its relation to transsexuality. by Zhou et al Nature (1995) 378:68–70.
A sex difference in the hypothalamic uncinate nucleus: relationship to gender identity by Garcia-Falgueras et al Brain. 2008 Dec;131(Pt 12):3132-46.
And several hundred other papers on the subject.
In short, the evidence is that Chaz Bono always had a male BSTc Layer in the Hypothalamus, a male Left Frontal Gyrus, a completely male Lymbic system, and for all we know, may even have the 46,XY chromosomes
most men have.
e.g.
“A 46,XY mother who developed as a normal woman underwent spontaneous puberty, reached menarche, menstruated regularly, experienced two unassisted pregnancies, and gave birth to a 46,XY daughter with complete gonadal dysgenesis.”
- J Clin Endocrinol Metab. 2008 Jan;93(1):182-9
He was Intersexed, with a body partly male and partly female. He just looked superficially female at birth. Just as those men in Gaza did. They had a natural change to align their brains with their bodies - Chaz had to have medical treatment to accomplish the same process.
The Theology of the Body as regards sex is a perfect description of 59 people out of 60. For the 60th… not so much. And for 1 in 1000, one must twist the theory into pretzels to try to coerce it to fit biological reality.
It was once argued that Theologically speaking, the Sun
had to orbit the Earth, and in a perfect circle. Then it was argued that OK, the Sun didn’t orbit the Earth, and the circles had “epicycles” in, perfect circles within perfect circles (within perfect circles within…). That had to be the case, because of Theological reasons.
Keppler showed the orbits were elliptical, just very close to being circular. By then., the Church had stopped serious attempts to coerce observations of reality into fitting theological dogma.
I think that maybe we might do worse than return to the compararive enlightenment of the 17th century here.