There is another Biblical argument for our point of view not mentioned in the article. In Genesis it states that God created humans in his own image.
"So God created man in his own image, in the image of God he created him; male and female he created them." (Genesis 1:27, RSV2CE)
In fact it is often this very passage invoked against us. Both Catholics and Evangelicals will say it is a sin for us to alter that which was created in God's image. So it is useful then to explore exactly what "created in his own image" means. Genesis 2 describes the creation of man as a two step process.
" then the Lord God formed man of dust from the ground, and breathed into his nostrils the breath of life; and man became a living soul." (Genesis 2:7, RSV2CE)
According to Christian theology then we are both body and spirit, the two together forming a living soul. The body, that which dies, is formed from the dust of the earth, or from elements of matter. The spirit, that which does not die is given to us by God. The scriptures state that God is Spirit, not flesh from the dust of the earth. Therefore it follows that when the scripture states we are created in God's image it is the spirit he breathed into us that forms that image and not the dust of the earth.
" God is spirit, and those who worship him must worship in spirit and truth." (John 4:24, RSV2CE)
It is our mind, our ability to reason, that is the image of God. Our body is simply matter that does not share in God's image. St. Thomas Aquinas stated this very eloquently in the 13th Century,
"Man is said to be after the image of God, not as regards his body, but as regards that whereby he excels other animals. Hence, when it is said, Let us make man to our image and likeness, it is added, And let him have dominion over the fishes of the sea (Gen. 1:26). Now man excels all animals by his reason and intelligence; hence it is according to his intelligence and reason, which are incorporeal, that man is said to be according to the image of God."
Thomas Aquinas, Summa Theologica, trans. Fathers of the English Dominican Province (London: Burns Oates & Washbourne, n.d.).
How this applies to those who are transgender is clear. By altering our bodies in some manner through HRT or surgeries we bring that which is not in the image of God. the body, into agreement with that which is in the image of God, the mind. This would appear not to be sin at all.
A further argument made by our adversaries is that since God created man then mind and body cannot be opposition to each other. However, the scriptures once again disagree with their argument. St. Paul states,
" For the desires of the flesh are against the Spirit, and the desires of the Spirit are against the flesh; for these are opposed to each other, to prevent you from doing what you would." (Galatians 5:17, RSV2CE)
So while God may have initially created body and spirit in perfect harmony, this perfect harmony no longer exists. Does this then leave us with the freedom, in the Christian context, to alter our bodies to harmonize with our mind? Catholics and Evangelicals will reply no, that any alteration of body through HRT or surgery is a mutilation of God's creation and therefore a sin. Once again, scripture disagrees with their statement. According to the Gospel of Mark, Jesus says,
"And if your hand causes you to sin, cut it off; it is better for you to enter life maimed than with two hands to go to hell, to the unquenchable fire. And if your foot causes you to sin, cut it off; it is better for you to enter life lame than with two feet to be thrown into hell. And if your eye causes you to sin, pluck it out; it is better for you to enter the kingdom of God with one eye than with two eyes to be thrown into hell, where their worm does not die, and the fire is not quenched." (Mark 9:43–48, RSV2CE)
Body parts then are not inviolable according to God, at least not when those body parts are the occasion for sin. In our circumstance this is certainly the case as the dysphoria caused by the disharmony of mind and body leads to disruptions in mental health resulting in the many bad outcomes we are all familiar with up to and including suicide.
It is ironic then that the solution offered by Catholics and Evangelicals is to alter the mind to bring it into harmony with the body. They state then that it is God's will to change what was created in his image to harmonize with what is not in his image. This to me is an unsatisfactory response to what Scripture tells us about the nature of body and spirit.