Joy starts from God’s heart, and its purpose is realized in human beings. The heart of the invisible God manifests itself in the heart of a visible human being. When people with such a heart multiply horizontally and form families, these families become the center of the world. God blessed Adam and Eve to be fruitful and multiply so that they could have such a family. The ideal of the cosmos is established on the basis of being fruitful, multiplying and having dominion over all things.