The central message of this sermon is that humanity was created with a purpose, designed by God to reign in relationship. This means that humans are not simply random collections of cells, but rather, they have been intricately crafted to fulfill a specific role on earth - to rule over God's creation in harmony and order. The sermon argues that this design is reflected in the biblical account of creation, particularly in Genesis 1:26-28, where God says "let us make man in our image" and gives them dominion over the earth. This message advances a belief in a creator God who intentionally designed humanity with a specific purpose, rather than adhering to a modern secular view that humans are merely accidental products of chance. The takeaway is that understanding one's design and purpose as created by God can have significant implications for how we live our lives, including our relationships, work, and use of resources.