What is the main setting in the novel, Where Things Come Back?

Where Things Come Back, by John Corey Whaley begins in a small town in Arkansas called Lily where Cullen and his brother Gabriel live with their family. The town of Lily is also the place where John Barling is convinced that the Lazarus woodpecker has made a reappearance after it was thought to be extinct. Alma Ember, also from Lily, decides to go to school in Atlanta, moving in with her grandmother, who is only too happy to pay for her schooling and living expenses. Benton Sage is an eighteen year old boy committed to the church in Atlanta, and is asked to do his first stint of missionary work in Ethiopia. While there, he will learn about the Book of Enoch (part of the Ethiopian Orthodox Bible) and will get his first exposure to the concept that the angel Gabriel was sent by God to kill the Grigori. Benton travels to some of the small towns in Ethiopia with Rameel before he returns to Atlanta, unable to cope with missionary work,and deciding to return to school instead, There, he meets Cabot Searcy who is his university dorm mate. Benton talks to Cabot about changing his ways and when Benton commits suicide, Cabot reads his journal, tumbling down the same rabbit hole of religion that Benton did, believing that he alone is tasked with finding the truth behind the human condition, Cabot meets Alma in Georgia and after dating for a month, she becomes pregnant. They marry, but when Alma loses the baby, she also loses interest in her marriage to Cabot whose religious questions have become obsessions. Alma returns to Lily, and Cabot follows. He kidnaps Gabriel, mistaking him for Cullen, and then deciding the error is all part of the divine plan. He takes Gabriel to Atlanta where he holds him captive for several weeks.