Unlike Roman Catholic theologians, evangelicals have been slow to write on the metaphysics of gender. Most evangelical works on sexuality limit their investigation and argumentation to biblical texts and exegesis. Already within evangelical theology, there has been a growing movement of retrieval. This paper will contribute to evangelical anthropology by retrieving Thomas Aquinas’s metaphysics, especially his metaphysics of causation and hylomorphism. Though Thomas Aquinas considered gender an inseparable accident of matter, this paper will argue that the human soul, as the substantial form of the body, is gendered as male or female. This paper, then, is a critique of Thomas using Thomas for the sake of evangelical theology. The argument will be made in two sections: 1) arguing for gendered souls from nature and 2) arguing for gendered souls from Scripture, especially focusing on Genesis 1:26-28 and 1 Peter 3:7. Gendered souls have implications for the continuity of identity beyond death, as well as the ethics of gender roles.