Muslims believe that God is the only true reality and sole source of all creation. Everything including its creatures are just a derivative reality created out of love and mercy by God's command, "..."Be," and it is." and that the purpose of existence is to worship or to "know" God. It is believed that God created everything for a divine purpose; the universe governed by fixed laws that ensure the harmonious working of all things. Everything within the universe, including inanimated objects, praises God, and is in this sense understood as a "muslim". An exception are humans, who are endowed with free-will and must live voluntarily in accordance with these laws to live to find peace and reproduce God's benevolence in their own society to live in accordance with the nature of all things, known as "surrender" to God in the Islamic sense.