The reason God knows everything past, present, and future is because he exists out of time.
If God exists outside of time he can have no effect on the universe or the creation of it. X causes Y causes Z. If God is timeless he can not at X time create the universe as there is not X time for him.
Time exists, sorry whatever you read is completely wrong, and probably apologetic garbage. The Theory of relativity completely supports time, I advice you to read about it. What it does say about time is that it can be dilated, it can be distorted, it can pass at different speeds to observers and objects. Space can be curved by objects, black-holes for example. In relation to time, this curvature causes the gravitational time dilation effect, it distorts space-time. Under normal circumstances, this effect is impossible to observe. However, in the presence of the extremes of our universe, black holes, where a huge amount of matter is compressed into an extremely small volume, this effect becomes much more obvious. To a distant observer, an object falling into a black hole would appear to never reach it, due to time dilation causing time to "progress" extremely slower, at least relative to the distant observer the object in question, however, would very rapidly be destroyed by the black hole. You also should read about B-theory time.
A second aspect to the gravitational time dilation postulate is that the faster an object is moving, the slower time progresses for that object in relation to a stationary observer. While in everyday circumstances, this effect goes entirely unnoticed, it has proven to be true. An atomic clock placed on a jet airplane was shown to "tick" more slowly than an atomic clock at rest. However, even with the speeds achieved by a jet aircraft, the time dilation effect was minimal. A more solid example can be seen through an experiment performed on the International Space Station (ISS). After the first 6 months in space, the crew of the ISS aged .007 seconds less than the rest of us on earth (the relatively stationary observers). The station moves at approximately 18,000 miles per hour (see applet below to track the location and speed of the ISS), much faster than the range of normal human speeds. Even with such speeds, however, time dilation is minimal unless you approach speeds close to the speed of light.
Time is very very much a part of this theory.
Topic: Free Will vs. God's plan