God’s omnipresence in his design from beginning to end is a function of the heat and light from the sun that surrounds God in the spiritual world. The divine design was created through this sun. From it God sends forth a heat and a light that pervade the universe from beginning to end. That heat and that light give life to humankind and to every animal. They also produce the plant soul that every plant in the world possesses. The two flow into every single thing and cause it to live and grow according to the design assigned to it upon creation.
Because God is not extended and yet fills all things throughout the universe that are extended, he is omnipresent. I have shown elsewhere that God is in all space independently of space, and in all time independently of time (Section 30), and therefore the universe in its essence and design is the fullness of God. Therefore he senses all things through his omnipresence, he provides all things through his omniscience, and he produces all things through his omnipotence. Clearly then, omnipresence, omniscience, and omnipotence are one; each presupposes the next. Therefore they cannot be separated.
from True Christianity, Section 63