If God knows every possible future but does not fix which one becomes actual, how can He prophesy? How can He say, with certainty, that something will happen? This model offers an answer.
Not Only Foresight
Some prophecy may not simply consist of God looking ahead and reporting what He sees. In some cases, God’s word itself establishes a condition that reality must eventually satisfy.
Genesis gives the basic pattern:
“Let there be light.”
And there was light.
God’s word is not merely descriptive. It can be creative and constitutive. When God speaks, He is not always reading a forecast. Sometimes He is laying down a law that the world will keep.
Scripture describes God’s word this way in more than one place. Isaiah has the Lord say that His word “shall not return unto me void, but it shall accomplish that which I please.”Isaiah 55:11. The same chapter of Isaiah that speaks of “declaring the end from the beginning” adds, “My counsel shall stand, and I will do all my pleasure.”Isaiah 46:10. Read with this model in mind, those passages describe a word that binds the outcome, not a word that narrates a script.
Pruning the Possible
When God declares that some future event must occur, He does not necessarily specify every event leading to it. Instead, futures that are incompatible with the declared outcome are no longer candidates for actuality.
Return to the picture of the tree of possible histories. God does not need to choose one complete, predetermined path through that tree. He can instead prune away every history that fails to satisfy the condition He has established.
The remaining possible histories may still contain enormous freedom. Millions of different paths may still lead to the declared outcome, and the people living through them are still choosing at every fork. What has changed is not their freedom. What has changed is that no path that misses the outcome is any longer a path that history can take.
That gives a basic principle:
God can fix an outcome without fixing the choices that lead to it.
A careful reader will ask how pruning a branch can leave everyone free. Suppose a decree removes every history in which some event fails to happen. Then at some fork, one option might lead only to pruned histories. Is that option still really available? The model needs an answer here, and the most natural one is this: God’s decrees are framed so that every option open to every agent still leads to at least one history in which the decree is satisfied. The decree constrains the combinations of choices and circumstances, not any single person’s options. That assumption is named and examined in the companion chapter “Open Questions.”
The Second Coming
The Second Coming is a good present-day example. Certain events surrounding it are prophesied to occur, and those outcomes can be considered fixed at a broad level, while the choices of every individual participating in those events remain genuinely open.
No one alive in that day is a puppet. Each person will choose how to live, whom to follow, and what to become.
The prophecy is fixed.
The people are not.
Why This Matters
This way of thinking keeps two things that are often traded against each other. It keeps the full certainty of God’s word: what He declares will come to pass. And it keeps the full reality of human agency: no one is forced along the way.
This view also changes what we should expect prophecy to look like. If God fixes outcomes rather than scripts, then we should expect prophecy to be firm about what and often open about how, who, and when. Which is very often exactly what we find.
Two Kinds of Prophecy
Not every prophecy in scripture is a decree in this strong sense. Some are plainly conditional. Through Jeremiah the Lord says that if a nation He has warned turns from its evil, “I will repent of the evil that I thought to do unto them.”Jeremiah 18:7–10. Jonah announced that Nineveh would be overthrown in forty days; the city repented, and it was spared.Jonah 3:4–10. This model can absorb both kinds. A conditional prophecy reports a branch of the tree (“this is where your present course leads”) and invites a different choice. A decree, by contrast, prunes the tree. Part of reading prophecy wisely may be learning to tell which is which.