Conventional Judeo-Christian theology says that God created the pre-fall creation, but that mankind broke creation with original sin at "the fall." The fall introduced both sin (wrong actions and intentions - hate, deceit, etc.), and brokenness (wrong structures - disease, deformities, etc.).
You spoke of what were once referred to as "hermaphrodites," known today as "intersexed" people with a genetic condition that gives them one extra x or y chromosome, and results in some mixed combination of genitals. You may _not_ know of many other variations of sex and gender that exist in this fallen creation. For example those with AIS (androgen insensitivity syndrome), which are anatomical females who have xy chromosomes, but at the stage of fetal development when male genitals would have been created, a small defect causes their body to ignore the male hormones so that development continues to create an anatomical female.
In the womb, a baby begins to develop without sexual differentiation, at some point in development (I forget which week#). If the chemical signal to create a male is received, the internal genital organs that had begun looking female, descend through the pelvis and begin to develop into external male genitals. If anything interferes with that chemical signal female genitals will result.
Similarly, the brain undergoes some gender differentiation. There are real documented differences between the structures of the average male brain and the average female brain, and many more differences than we can begin to measure or fully understand. Female brains tend to have more corpus callosum connections between the brain hemispheres, allowing women on average to be somewhat better at synthesis, and men on average to be somewhat better at analysis.
Brain structures are built in the womb just as external body and organ structures, it's just that we know relatively little about the internal brain structures and functions, but we can clearly see the developing external body structures.
One of the common and most severe effects of fetal alcohol syndrome, is to diminish the development of the corpus callosum, in extreme cases leaving the hemispheres almost completely severed. This leads to behavioral and learning disability effects that are physical, not psychological, and are not genetic.
Humans are born with all sorts of variation, some that we enjoy (hair color, eye color, etc.) and some that are less desirable (cleft palettes, club feet, dyslexia, etc.). Some of these are genetic, and some are biochemically caused developmental variations.
A small percentage of people, about one in three hundred by current best estimates, are born transgender, with a mixture of male and female body and brain structures. I was born with a female brain, and male external features. I identify with the identity in the structures of my brain, and have lived most of my life at war with the nature of my body.
Transgender people do _not_ have a psychological condition, it is a medical condition, with differently gendered physical structures; brain structures that differ from genital and other body structures.
That you do not have this condition, makes it exceedingly difficult for you to imagine that it's even possible, but for those who do, it is clear and as persistent and obvious as your fingerprints or eye color. The need to align the body to the brain is not sin, anymore than surgery to correct a cleft palette could be sin.
There are some extremists who would say if you were born with a cleft palette, that is the way God made you, and it would be sin to correct it, but I doubt that anyone here would take that position. But that is _exactly_ the attitude some of you have had toward transgender transition, because you have not understood its nature.
Transgender people before transition have the highest rates of suicide of any known condition, 20% take their own life, 48% have attempted suicide, and nearly 100% have secretly had persistent thoughts of suicide all their lives. Such is the psychic angst of this condition, known as gender dysphoria. After successful transition with proper medical care and resources, transgender people typically have suicide rates below that of the background population.
As Christians how can we countenance condemning these people to such torture when medical science can substantially relieve that torture.
As a Christian, I can tell you that since my transition, as I began coming to the Lord in prayer authentically for the first time in my life, I have seen answers to prayer that are clear, immediate, and unambiguous, such as I had never experienced before. The revolution in my Christian walk, the nearness of Christ, has stunned me. I have never been so happy nor felt such peace. Those who knew me before can see it in me, they constantly tell me so.
The real sin related to the transgender issue is the bias borne of ignorance, that feels like hatred to the transgender community, which is driving so many transgender people out of the church, for their own survival. I firmly believe that the church will come under far more condemnation for driving these people away, than will those who leave to survive.
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