Here is the thing about God. He is so big and so perfect that we can't really understand Him. We can't possess Him, or apprehend Him. Moses learned this when he climbed up Mount Sinai and saw that the radiance of God's face would burn him up should he gaze upon it directly. But God so wants to be in relationship with us that He makes himself small, smaller than He really is, smaller and more humble than his infinite, perfect self, so that we might be able to get to Him, a little bit.