Sidelined, hopefully this will help.
Consider a two dimensional plane inhabited by two dimensional shapes. Now, consider a three dimensional shape that resides above this two dimensional plane. The 3d shape is not in the 2d plane. It is above it, it "transcends" the 2d plane. However, if it chooses, the 3d shape can lower part of itself into the 2d plane. Now, although the majority of the shape still transcends the 2d plane, part of the 3d shape exists in the plane and can cause things to happen.
I believe that God exists in higher dimensions that we as humans are not able to percieve or reach, just as the 2d objects were not able to percieve or reach the 3d plane.
This analogy is obviously not perfect (otherwise it would not be an analogy) but it helps to illustrate the way in which God exists outside our universe and yet can still affect the universe if he chooses.
If you say there are no absolutes, I ask you, are you absolutely sure about that?