Both Christianity and Islam, as Abrahamic monotheisms, have official doctrines that reject reincarnation in favor of a single earthly life followed by final judgment. Yet within both traditions, reincarnationist currents have persisted — in marginal sects, mystical movements, and philosophical speculation.

Christianity

The New Testament and Early Church

Proponents of reincarnation in Christianity point to several passages: Jesus’s identification of John the Baptist as Elijah (“He is Elijah who was to come” — Matthew 11:14); the question of whether the man born blind sinned before birth (John 9:2); and Paul’s hints about the soul’s pre-existence (e.g., “chosen before the foundation of the world”).

However, the mainstream church — following Origen’s pre-existence teachings (which were later condemned) and Augustine’s rejection of the doctrine — definitively rejected reincarnation. The Second Council of Constantinople (553 CE) is widely understood to have condemned the Origenist teaching of the soul’s pre-existence and fall.

Gnostic Christianity

Gnostic Christian sects, drawing on Platonic and Eastern influences, taught reincarnation as part of their framework of the soul’s journey through the material world toward return to the Pleroma (divine fullness). Texts from the Nag Hammadi library reflect this understanding.

Medieval Cathars

The Cathars (“the Pure”) of 12th–14th century France and Italy revived reincarnation as a central teaching. They held that souls were angels trapped in human bodies by the evil demiurge (the God of the Old Testament), and that the goal was liberation through spiritual purification and ascetic practice — particularly the consolamentum (baptism of the spirit). The Albigensian Crusade (1209–1229) was launched by the Catholic Church to suppress them.

Islam

The Quran and Islamic Orthodoxy

The Quran mentions the soul’s journey after death (Barzakh, the intermediate state) and the final resurrection (Qiyama), but mainstream Islamic theology rejects reincarnation (tanasukh). Most Islamic scholars consider it incompatible with the Quranic teaching of one life followed by judgment.

Sufi Perspectives

Annemarie Schimmel’s Mystical Dimensions of Islam documents how Sufi poets and mystics — Rumi, Ibn Arabi, Attar — used reincarnation imagery symbolically and at times literally. Rumi’s famous lines describe descending through mineral, plant, animal, and human forms on the journey toward God. Some Sufi orders (turuq) have taught the transmigration of souls as part of their esoteric doctrine.

Seyyed Hossein Nasr’s The Heart of Islam situates the question within the broader Islamic framework of the soul’s journey (sayr wa suluk) toward God, emphasizing that the orthodox view is one of resurrection rather than reincarnation, while acknowledging diversity of interpretation in the esoteric domain.

Druze, Alevis, and Other Groups

The Druze, an esoteric offshoot of Isma’ili Shiism centered in Lebanon, Syria, and Israel, hold reincarnation (taqammus) as a core doctrine: souls transmigrate immediately upon death into a newborn of the same faith. The Alevis of Anatolia and certain Sufi orders also incorporate rebirth concepts.

Ibn Warraq’s Why I Am Not a Muslim criticizes Islam from a secular perspective and includes discussions of these heterodox movements.

Islamic Philosophy and the Ikhwan al-Safa

The Brethren of Purity (Ikhwan al-Safa), a 10th-century secret society of philosophers in Basra, wrote extensively on the soul’s journey through multiple lives as part of a Neoplatonic framework of emanation and return.

Comparative and Historical Context

The presence of reincarnationist ideas in both Christian and Islamic contexts demonstrates the cross-cultural appeal of the concept. The persistence of such teachings — despite official suppression — suggests that the desire for multiple-lifetime spiritual development and the intuition of karmic justice resonate deeply across religious boundaries.