The world was destroyed by the Flood because it was covered with violence (Genesis 6:11,13). Many commentators have suggested that this violence was the result of demonic influence.
After the Flood, we see increasing evidence that the formation of the State was demonic in its impetus.
But just like the Fall of Man did not result in God's command to form "the State," we see no evidence that the violence judged by the Flood prompted God to command men to form “the State.” Noah built an altar ("church") and what we call “capital punishment” was also given to the Family -- “to Noah and his sons” (Genesis 9:1,8) -- not to a “Civil Magistrate.”
If God ever commanded men to form "the State," He hasn’t done so up to this point.