 Speculation about divine attributes in theistic tradition has often been carried out in accord with what is currently referred to as perfect being theology, according to which God is understood to be maximally excellent or unsurpassable in greatness. This tradition was (famously) developed by Anselm of Canterbury (1033/4–1109). For a contemporary work offering an historic overview of Anselmian theism, see Yujin Nagasawa’s Maximal God; A New Defense of Perfect Being Theism (2017). Divine attributes in this tradition have been identified by philosophers as those attributes that are the greatest compossible set of great-making properties; properties are compossible when they can be instantiated by the same being. Traditionally, the divine attributes have been identified as omnipotence, omniscience, perfect goodness, worthiness of worship, necessary of non-contingent existence, and eternality (existing outside of time or atemporally). Each of these attributes has been subject to nuanced different analysis, as noted below. God has also been traditionally conceived to be incorporeal or immaterial, immutable, impassable, omnipresent. And unlike Judaism and Islam, Christian theists conceive of God as triune (the Godhead is not homogenous but consists of three Persons, Father, Son, and Holy Spirit) and incarnate as Jesus of Nazareth (fully God and fully human).