This post was not written for here. I wrote it as part of a forum debate. Yet I am fairly happy with how it turned out, so I’m going to quote it here for the benefit of anyone who might be interested.
The universe was created ex nihilo, out of nothing at all, and therefore is not intrinsically tied to anything in the inner life, processes, or determinations of God. It is its own, though radically contingent, thing, which in and of itself is simply an ordered system which has no inherent meaning. It is nonetheless an open system, one in which God is freely able to introduce His own acts and purposes.
At the same time, God is utterly free and sovereign. While the nature of the cosmos is not meaningful or spiritual in and of itself, God is able to invest otherwise normal events with a purpose and direction, a telos, which flows from His eternal purposes of grace.
The point of contact whereby God grips the meaningless world and subjects it to His will is the Cross. On the natural surface, the crucifixion of Christ was arbitrary and senseless. A rising prophet, doing wonderful things all around, falls prey to the violence of selfishness, political games, and religious corruption and is unjustly murdered in a horrific way. What could be more vain?
Yet in this very event, God’s gracious purposes are being accomplished. God Himself is present in Jesus’ dying body, sovereignly submitting to weakness, suffering, and death because He has a particular plan. In this nonsense He somehow accomplished the expiation of sins, freeing of the entire world from guilt. Even this meaning, however, is quickened by the Resurrection, which overturned the death, suffering, and humiliation He experienced, infusing them all with their meaning and purpose. God took the climactic depths of human sin and meaninglessness, and then imbued the very same event with gracious saving power and significance.
On a wider scope, though, by this event, and by the Ascension of Christ to the heavens and the outpouring of His Spirit, Jesus has filled all of space and time with this same conquering power, so that in the end every square inch in every second of the universe is brought under His authority and love. No matter what meaningless and nonsensical events this universe throws before us, their inherent vanity is undermined and replaced with an eschatological arrow pointing to the summing up of all things in Christ.
I should add, though, that there is no analogy in nature or human experience for how this works. Our created cause-and-effect systems have nothing in common with the way the uncreated God implements His gracious plans in the world.