We have been created as forms of the divine design because we have been created as images and likenesses of God, and since God is the design itself, we have therefore been created as images and likenesses of that design.
The divine design originally took shape, and it continues to exist, from two sources: divine love and divine wisdom. We human beings have been created as vessels for these two things. Therefore the design that divine love and wisdom follow in acting upon the universe, and especially upon the angelic heaven, has been built into us.
As a result, heaven in its entirety is a form of the divine design in its largest possible manifestation. In the sight of God, heaven is like one human being. The correspondence between heaven and a human being is in fact complete. There are no communities in heaven that do not answer to some part, some internal or external organ, of the human body. For this reason a given community in heaven is said to be in the province of the liver, the pancreas, the spleen, the stomach, the eye, the ear, or the tongue, and so on. In fact, the angels themselves know which specific area within a given part of the human body they inhabit. I was given an opportunity to learn about this from living experience. I saw a community of several thousand angels together in the form of one human being. From that experience it became clear to me that heaven as a whole is an image of God, and an image of God is a form of the divine design.
from True Christianity, Section 65