particularly popular among immigrants. Apologists for the movement note its ethnic diversity and argue that it encompasses a variety of views. Joel Robbins of Cambridge University notes that most anthropologists attribute the theology's appeal to the poor—especially in the Global South—to the fact that it promises security and helps explain capitalism. Simon Coleman developed a theory based on the doctrine's rhetoric and the feeling of belonging it gave parishioners. In a study of the Swedish Word of Life Church, he noted that members felt part of a complex gift-exchange system, giving to God and then awaiting a gift in return (either from God directly or through another church member). Hillsong Church, the largest congregation in Australia, teaches a form of prosperity theology that emphasizes personal success. Marion Maddox has argued that this message has drawn a significant number of upwardly mobile Australians. Scott Morrison, who became the 30th Prime Minister of Australia in August 2018, is a member of Horizon Church, a Pentecostal church that believes in prosperity theology. In a 1998 interview in Christianity Today, Bong Rin Ro of the Asia Graduate School of Theology suggested that the growth in popularity of prosperity theology in South Korea reflects a strong "shamanistic influence". Bong pointed to parallels between the tradition of paying shamans for healing and the prosperity theology's contractual doctrine about giving and blessings. Asia's economic problems, he argued, encouraged the growth of the doctrine in South Korea, though he claims it ignores the poor and needy. During the interview, he stated that he saw the problem beginning to be reversed, citing calls for renewed faith and other practices. Cho Yong-gi, pastor of Yoido Full Gospel Church in Seoul, has been criticized for shamanising Christianity. This criticism has focused on his healing and exorcism ministries and his promise of material blessings. Malaysian Christian writer Hwa Yung has defended Cho's healing and exorcism ministries, arguing that he successfully contextualized the Gospel in a culture where shamanism was still prevalent. However, Hwa criticizes Cho's teaching of earthly blessings for not reflecting a trust in God's daily provision and for their heavy focus on earthly wealth. Comparisons with other movements Historian Carter Lindberg of Boston University has drawn parallels between contemporary prosperity theology and the medieval indulgence trade. Comparisons have also been made to Calvinism, but John T. McNeill disputes the widespread semi-Weberian idea that Calvinism promoted the idea of prosperity as