Not everything is relative, without any reference point.  The Earth is God’s center in the universe, His reference point. He created it “in the beginning”, and everything else that He did is in reference to it. Yeshua/Jesus came here to put away the sin of the world, and to cleanse things on Earth and in the heavenlies. I do not know if that means the Earth is the geographic center of the universe. It might be. Beer Sheva is close to being the geographic center of the State of Israel, but Jerusalem is the “center” of God’s purposes here.