Only thing the bible says about trans people is things like:
Love thy neighbor
Unto the least of these (which isn't the way it looks when using the modern English interpretation of "least")
Thou shall not bear false witness
Let he without sin...
Jesus ain't got nothing to say about trans people in specific, but plenty to say about how we're supposed to treat erybody.
Old Testament? That shit might cast some dubious shade at gay men if you want to stretch things, but it never says anything about trans people, even factoring in they wouldn't be called that.
Nah, I haven't been Christian since I was old enough to think for myself, but I read that shit multiple times, and multiple versions. Ain't nothing in any of it that says it's okay to be a bigot.