Conversion to Christianity is the religious conversion of a previously non-Christian person that brings about changes in what sociologists refer to as the convert's "root reality" including their social behaviors, thinking and ethics. The sociology of religion indicates religious conversion was an important factor in the spread of Christianity and the making of the modern world. Conversion is the most studied aspect of religion by psychologists of religion, but there is still very little actual data available.
Christianity is growing rapidly in the global South and East, primarily through conversion. Different methods of conversion have been practiced historically. There is evidence of coercion by secular leaders in the Early and Late Middle Ages, though coercion as a method has never been approved or even supported by any majority of Christian theologians.
Different Christian denominations may perform various different kinds of rituals or ceremonies of initiation into their community of believers. The primary ritual of conversion is baptism, while different denominations differ with regard to confirmation.
According to a 2001 study by religion professor David B. Barrett of Columbia University and historian George Thomas Kurian, approximately 2.7 million people were converted to Christianity that year from another religion, while approximately 3.8 million people overall were converting annually. In the first decades of the twenty-first century, Pentecostalism is the largest and fastest growing form of Christianity; this growth is primarily due to religious conversion.
Individual conversion
James P. Hanigan writes that individual conversion is the foundational experience and the central message of Christianity, adding that Christian conversion begins with an experience of being "thrown off balance" through cognitive and psychological "disequilibrium", followed by an "awakening" of consciousness and a new awareness of God. Hanigan compares it to "death and rebirth, a turning away..., a putting off of the old..., a change of mind and heart". The person responds by acknowledging and confessing personal lostness and sinfulness, and then accepting a call to holiness thus restoring balance. This initial internal conversion is followed by practices that further the process of conversion, which according to Hanigan, will include ethical changes.
In examples of conversion from the New Testament, such as Peter's conversion, and Paul's, Hanigan perceives this same common "death and rebirth" experience. He says these individuals did not respond out of a sense of guilt, but from awe, reverence, and holy fear of what they perceived as God's presence. Comparative studies of the early twenty-first century offer the insight that religious conversion provides a new locus of self-definition, moral authority and social identity through the acceptance of religious actions that seem more fitting and true to the recipient.
Religious conversion into Christianity sometimes came with physical incentives and rewards for new converts, such as the right of residence, access to land, or preferential legal status.
Anthropologist Robert Hefner adds that "Conversion assumes a variety of forms... because it is influenced by a larger interplay of identity, politics and morality". The message of Truth, a redemptive identity, and acceptance into a social organization whose purpose is the propagation of that message has proven to be a revolutionary force in its own right.
Theology According to sociologist Ines W. Jindra, there is a "theological dimension" to conversion. Avery Dulles quotes Bernard Lonergan saying "The subject of theology, then, is the person undergoing conversion to God". The conversion experience is basic and has the characteristics of being "concrete, dynamic, personal, communal, and historical". Through this focus on the individual, theology of conversion is provided with the same characteristics in its foundation.
Religious historian David W. Kling's History of Christian Conversion lists nine broad themes common to conversion narratives. Jindra describes the first theme as "human cognizance of divine presence," while Kling says, "God becomes real to people" through conversion. Conversion always has "context": humans are "socially constituted" beings and religious conversion always occurs in a social context. Jindra writes that, while all conversion accounts vary, they all show evidence of being based upon personal internal experiences of crisis expressed through the specific historical context in which the converts lived.
There are aspects of both "movement and resistance" in conversion. Christianity has, from its beginnings, been an evangelical mission oriented religion which has spread through conversion. However, people naturally tend toward inertia, toward the familiar, unless otherwise motivated toward change, making conversion the exception not the rule in history.
There is both "continuity and discontinuity" in the conversion process. Conversion can be disruptive and cause a rupture with the past, but rupture is rarely complete. Aspects of the past are frequently kept, resulting in a kind of "hybrid" faith. Gender also plays a direct role in how people do or do not convert.
Testimonies and narratives provide the vocabulary of conversion. In the more famous conversion stories, such as Augustine's and Martin Luther's, it is apparent the conversion story was later used, not only for personal insight and transformation, but also for drawing in potential converts. Kling writes that "the influence of [such] personal testimonies on the history of conversion cannot be over-estimated." Indications from Jandra's twenty-first century research indicates this is also true for more ordinary, less famous, conversions. Conversion produced change in the lives of most converts in important and positive ways: Jindra says "they became more stable, found meaning in life, tackled their former problematic biographical trajectories, and improved their relationships (Jindra, 2014)".
Conversion has historically been impacted by how personal "identity" and sense of self is defined. This can determine how much intentional action on the part of the individual convert has directed outcome, and how much outside forces may have impinged upon personal agency instead. In Christian conversion, there is nearly always a network of others who influenced the convert prior to conversion. Jindra writes that the specific context, which includes the ideology of the group being joined, the individual convert's particular crisis, "and the degree of agency vs. the influence of others" are important aspects influencing whether converts change or do not change after a conversion.
These factors overlap with research psychologist Lewis Rambo's stages of conversion. Rambo's model of conversion includes context, crisis (involving some form of searching by the prospective convert), encounter, and interaction, (with someone who believes in the new religious belief system). This is followed by commitment and its results.
Social science In his book Sociology of Religion, German sociologist Max Weber writes that religious conversion begins with the prophet, as the voice of revelation and vision, calling others to break with tradition and bring their lives into conformity with his "world-building truth". Weber believed that prophetic ideals can become, through the conversion of a community of followers, "a force for world transformation as powerful as anything in human history.
Calling conversion and Christianization "twin phenomena", Hefner has written that religious conversion was an important factor in the emergence of civilization and the making of the modern world. According to Hefner, the "reformulation of social relations, cultural meanings and personal experience" involved in conversion carries with it an inherent "world building aspect".
In the late nineteenth century, the development of world religions (Judaism, Christianity, Islam and Buddhism) was seen as part of the inevitable march toward human enlightenment in a linear upward evolution. Anthropology effectively demonstrated the failure of this model to provide explanation for religious variations.
The world religions developed institutions capable of standardizing knowledge and some have argued that this helped them survive while "empires and economic orders have come and gone". But in fact, only a few religions have been successful in propagating themselves over the long term, and standardized doctrine does not necessarily impact individual conversion and belief.
One of the most influential works in sociology of religion from the 1960s is Robert Bella's (1964) Religious Evolution, which argued that world religions all proclaim the existence of a transcendental realm that is superior to everyday reality, thereby legitimizing salvation/conversion experiences designed to link humans with that world. Bella describes the possibility of redemption/conversion under these terms as "world-shaking in its consequences". The tension between ordinary reality and the transcendent creates recognition of a need for social reform, driven by a redemptive vision, that remakes the world rather than passively accepting it. In this way, Hefner says, world religions loosened the grip of tradition and laid the foundation for human freedom.
Psychology While conversion is the most studied aspect of religion by psychologists of religion, there is little empirical data on the topic, and little change in method since William James' classic Varieties of Religious Experience in 1902. James Scroggs and William Douglas have written on seven current concerns in the psychology of conversion.
Definition. Calling this the "oldest issue in the field", Scroggs and Douglas indicate psychologists ask whether conversion requires a sudden about-face or gradual change. There is no consensus. The word connotes a sudden about-face, but psychologists are unwilling to let go of the possibility of gradual conversion. Pathology. Freud saw religion as a pathology, and those who follow his school of thought have continued to do so. Empirical studies indicate religion is associated with good mental health among women, that it aids with depression and overcoming serious problems like heroin addiction, and that generally, there are significant links between religion and spirituality and good physical and mental health. In Scroggs and Douglas's view, which view a psychologist takes depends on their training and personal commitment to faith or non-faith. Type of person. Many wonder if there is one kind of person that is more likely to be converted than others. Sociologists stress the importance of such variables as social class, group expectations, and social change (as in American frontier society or contemporary China). According to Scroggs and Douglas, William "James regarded the sick soul as the most likely candidate for conversion. The sick soul lives 'close to the pain threshold.' He is generally introverted and pessimistic in outlook, taking the evil of the world profoundly to heart. The sick soul is brooding, steeped in existential angst. He is Kierkegaard's man who is in despair and knows he is in despair". Trauma and existential crisis can lead to conversion. For the already converted, trauma is also often associated with "beneficial changes in self-perception, relationships, and philosophy of life, and positive changes in the realm of existential, spiritual, or religious matters" according to a study by psychologists Rosemary de Castella and Janette Simmonds.