This session will offer an overview of the ‘strange new world of gender’, its key ideas and its impact on science and medicine. We will look at the roots of ‘gender identity’ theory, consider different interpretations of the biological characteristics of sex, and scrutinise the weak evidence base for the medical care for gender-questioning patients. We will then consider several key biblical themes (perspectives on our physical bodies, sex, gender, identity, and suffering) which play a part in framing a Christian response.