Trans people don't actually exist. Brilliant way to put that!

A story from the pseudepigraphal Gospel of Thomas (not a real gospel) has Jesus' disciples saying to Him (I'm paraphrasing, from memory): "Poor Mary Magdalene, she can't get into heaven because she's a woman." Jesus responded to the disciples "That's okay, I'll just change her into a man and then she can get into heaven."

This story is so ridiculous and unlike anything Jesus said as recorded in the other Gospels, but I cite it here because if God did change a woman into a man then you would have an actual example of a trans person. Otherwise, the hormones, surgery, clothes, names, pronouns, and things that we humans can change don't actually change a person from one biological sex into another.