God in His Law told people, men could not wear women's clothes, nor women wear men's clothes, it was an abomination.
Simply God created them male and female. Anything other than that is an abomination, and abominations will get destroyed.
Sorry if you don't like that and don't bring up genetically damaged people, we are talking about normal people switching genders.
The works of this world are evil, so it hates the ways of Christ (God.)
Genesis 1:27 So God created man in His own image; in the image of God He created him; male and female He created them.
Genesis 2:24 Therefore a man shall leave his father and mother and be joined to his wife, and they shall become one flesh.
Matthew 19
4 And He answered and said to them, “Have you not read that He who made them at the beginning ‘made them male and female,’ 5 and said, ‘For this reason a man shall leave his father and mother and be joined to his wife, and the two shall become one flesh’?
Jesus firmly established the separation of the genders the same as in the OT. nothing has changed today for people who live in this world.
Deuteronomy 22:5 “A woman shall not wear anything that pertains to a man, nor shall a man put on a woman’s garment, for all who do so are an abomination to the Lord your God.
The understanding here has to do with sexual perversion, that a man would want to be a woman, and a woman want to be a man, contrary to the way God created them. Transgenderism is simply homosexual sexual immorality.