From the nature of the case involved, that cause must have transcended space and time (at least sans the universe) and therefore be uncaused, changeless, eternal, immaterial, and enormously powerful. Moreover, as I have argued elsewhere [Craig (1979), pp. 149-153; (1991), pp. 104-108], the cause is most plausibly construed to be personal. For the only way in which a temporal effect could originate from an eternal, changeless cause would seem to be if the cause is a personal agent who eternally chooses to create an effect in time. A changeless, mechanically operating cause would produce either an immemorial effect or none at all; but an agent endowed with free will can have an eternal determination to operate causally at a (first) moment of time and thereby to produce a temporally first effect. Therefore, the cause of the universe is plausibly regarded as personal. This conclusion receives confirmation from the incredible complexity of the initial conditions given in the early universe, which bespeak intelligent design [Leslie (1990)]. These attributes are some of the core properties of what theists mean by "God."