Conceptually deconstructing the distinction between monotheism and polytheism, it advances the terms multi-devotionalism and mono-devotionalism as analytically preferable terminology. It starts by exploring notions of polytheism in the Old Testament, New Testament, and Christian developments of the Trinity over subsequent centuries, before placing Christianity in comparative dialogue with Islam, Judaism, and Hinduism. Employing a decolonial and feminist stance, the book proceeds to examine global Christianities, focusing on African and Asian theologies as well as Goddess traditions. It concludes by offering five options for developing a theology of Christian polytheism: henotheist originalism, theologies of plurality, a generous orthodoxy, atheistic Christian polytheism, and a theology of polytheistic excess. This original and compelling volume is essential reading for scholars of Christian Systematic Theology and Modern Theology.