I don't know what God did or didn't know.
Your turn. If the future doesn't exist yet, how could Hartwell, Radin and Bierman get the results they did in their experiments?
You are crazy if you think science know/understand what they consider as "time."
But I'll humor you. First, let me start by saying I am a computer developer, not a physicist. I am a part time theologian, and when it comes to your questions, the true answers are found by looking at God, not physics.
Anyway...
It comes as no shock that they would say time does not progress for something that travels the speed of light. It seems almost "no duh". But when you examine light, it does experience change!
Doesn't that seem odd that something that is "timeless" can change?
When light strikes an object, it dies. When it passes through a prism it changes, it is broken apart. It even slows down as it passes through glass.
If there is no duration of time in photons from point A to B, how can it change? Why does white light break down into all the colors of the spectrum if time does not exist in photons?
When I cast a shadow puppet on a wall, the light that hits my hand has a small refraction and after so long, the light is no more. How can a photon go from being locked in a moment in time to not existing? The answer is it can't. It is indeed in time and it too travels along in the present and is a part of the same present as all of us.
Now humor me.. please. Use your brain.
With no realm of physics in existence, can God know the future?