Isaiah 56: 4-5

[Lady Smith]

For thus saith the Lord to the eunuchs, They that shall keep my sabbaths, and shall choose the things that please me, and shall hold fast my covenant:
I will give to them in my house, and within my walls, a place, and a name better than sons and daughters: I will give them an everlasting name which shall never perish.

I wonder how many bible waving Christians have read Isaiah 56: 4-5?  The arguement that there are only two genders  and you are what you are and it's forbidden to seek to make changes to your body falls a little flat on reading Isaiah.