Book excerpt: This book argues that ethical leadership without a theological foundation is lacking a firm foundation. It begins with a critical assessment of ethical leadership as a leadership theory, showing how ethics and theology became separated, creating the space for ethical leadership outside of theology. Nevertheless, the author argues that ethical leadership without a biblical basis is weak, though one need not be religious to embrace the leadership principles of biblical theology. Unfolding Christology, anthropology, eschatology, and contextualized leadership as four key aspects of biblical theology for ethical leadership, this book will appeal to those studying leadership, business, innovation, and entrepreneurship.