A Christian Science perspective.
There are some concepts of God that put Him into the universe He created – somewhere perhaps far away. He is said to have wound up the universe and mostly left it to run by the laws of physics like an immensely intricate clock.
However, the former slave and abolitionist Sojourner Truth had a different idea. She once said, "God is the great house that holds all His children; we dwell in Him as the fishes dwell in the seas." So rather than God living somewhere in the universe, all the universe was rather in God.
One way that Mary Baker Eddy, who discovered Christian Science, described God was as infinite Mind, filling all space. She wrote, "It would require an infinite form to contain infinite Mind. Indeed, the phrase involves a contradiction of terms" ("Science and Health with Key to the Scriptures," p. 257). The universe, then, is spiritual, the expression, the ongoing creation, of infinite Mind. Since Mind includes all, there is no "outer" space to God.
How does infinite Mind manifest itself? Through ideas. The creation of the ideas that constitute the universe is the expression of the Creator, and the ideas created by Mind cannot have any distance between them. God does not have to wait for one of His ideas to cross the universe to be near another of His ideas. How can there be any distance between the ideas in a mind? So, in God's true creation, there can be no distance, no separation, no loss, or no loneliness. God's ever-presence precludes any of these.