Today's extensive cosmological data sets are a gracious gift of God, inviting us to understand them within a Biblical framework. A previous article (Part I) considered several relevant Scripture passages. This article attempts, in turn, to justify three working assumptions: firstly, that God designed the Universe to be intelligible, given sufficient observational and theoretical perseverance; secondly, that God designed it to maintain roughly invariant characteristics over long periods of time (quasi-steady state); thirdly, that certain features of the Universe are ultimately inexplicable in terms of today's physics