Goe exists in space and time and He is Eternal (Knowing all our future free will choices).
As for space: God is not static or unchanging in behavior and He occupies some type of space. For man was created in God's image and man fills up space and mankind varies in behavior so it would make sense that God would occupy space and have a noticeable change in behavior even before the creation, too. In addition, we know that the Lord can also reveal Himself to us in our physical world as a visible spirit being.
Why is this important? Well, this leads into that aspect we call time. For this all suggests that a portion of God can at least be measured; And if something can be measured, then it suggests that time exists. For time is the recording of a particular person or thing in space that can be effected by sequential change. God was not doing nothing in Eternity's past. I am sure He was doing many things. In fact, Scripture does mention a few of things He did before the Beginning (of which I mention in the beginning of my study thread). Anyways, these changes or moments in time can be recorded. This is what I would like to call a dimension of time known as Eternity. It is a special place of time that only God inhabits alone (Isaiah 57:15). For the Lord is the only One who exists from everlasting to everlasting (Psalm 90:2).
Our entire linear time is a pocket of time that is frozen to God. He can see the entire thread of our existence from beginning to end in this world and he can interact with all points in that thread (or string).
To put it to you another way so as to help you understand that God knows the future in perfect detail: Well, lets say God could have created a dream (or simulation) at a super high fast speed that would let our creation play out before Him before God actually created everything physically. The Lord our God could have simply played out the scenario of our creation in His own mind. In other words, God created molecules knowing what they were going to do. God created gravity, knowing what it was going to do. So God knew what he was going to create and God knew how He was going to react within His creation before it actually happened in our linear time (in real time).
I hope this helps.
And may God bless you all.