I cannot contain all of God at once. I am spatiotemporal. I can only have part of Him at any one time. But over time more and more of Him can flow through me and I swell to become larger.
On the way to rising up and out of ourselves we take on more than one self. We were always destined to be gods. But there is an intermediary step between man and God. And that step is the many men. We all together comprise the supreme being. To take on two or more of us is to participate in a larger fraction of the supreme being.