“I have been crucified with Christ; and it is no longer I who live, but Christ who lives in me.”
— Galatians 2:20
What it calls itself
The word mysticism comes from the Greek μύειν (mūein) — “to close the lips” or “to close the eyes” — originally the silence surrounding initiation into the Greek mysteries. The early Christian writers took the word and made it theirs. Theologia mystica — “mystical theology” — names the knowledge of God not reached through discursive reasoning but given to a soul that has become capable of receiving Him.
Christian mysticism is not a separate denomination, sect, or spiritual technique. It is a current that runs through every Christian church — Catholic, Orthodox, Protestant, Coptic, Syrian — and precedes the splits among them. Its claim is that the Christian life reaches its intended term not in belief about God but in union with God, a union the tradition names variously: theōsis, deificatio, conformitas Christi, the unio mystica. The vocabulary differs by stratum; the phenomenon is recognizable across them.
Its insistence is also a counterweight: the Christian mystical tradition exists partly to remind the Christian theological tradition that what it is talking about is not theory. The most influential mystics are those the scholastic tradition has had to contend with rather than the ones who worked alongside it.
Strata
The tradition has clear developmental layers, each of which remains alive today:
New Testament roots (1st c.)
The ground. Jesus’s teaching on the kingdom of God as within (entos hymōn, Luke 17:21); the Johannine discourses on mutual indwelling (“I am in the Father, the Father is in me, and you are in me and I in you,” John 14–17); Paul’s testimony of being caught up to the third heaven (2 Cor 12), of Christ living in him (Gal 2:20), of the hope of glory which is “Christ in you” (Col 1:27). Every later development reads itself back into these texts.
Desert Fathers and Mothers (3rd–5th c.)
The first distinguishable Christian mystical tradition forms in the Egyptian, Syrian, and Palestinian desert: Antony the Great, Paul of Thebes, Pachomius, Macarius, Evagrius Ponticus, and the early ammas including Syncletica and Sarah. Their Sayings (Apophthegmata Patrum) are the tradition’s first practical manuals — short, austere, pragmatic teachings on prayer, thought, humility, and discernment of spirits. Evagrius’s analyses of the eight logismoi (later becoming the seven deadly sins) and his teaching on pure prayer (proseuchē kathará) shape everything afterward.
Patristic mystical theology (4th–7th c.)
The Greek Fathers — Origen, Gregory of Nyssa, Evagrius, Maximus the Confessor — develop a speculative mystical theology at the level of scripture and dogma. Gregory of Nyssa’s reading of Moses entering the divine darkness on Sinai frames the apophatic ascent. The anonymous Syrian author later called Pseudo-Dionysius (c. 500) systematizes the via negativa in the Mystical Theology: God exceeds every positive predicate, and the ascent to Him requires the progressive unsaying of everything one has said about Him.
Medieval Western mysticism (11th–15th c.)
The flowering: Bernard of Clairvaux’s sermons on the Song of Songs, the Victorines, Hildegard of Bingen (visionary polymath), the Franciscans (Francis, Bonaventure, Angela of Foligno), the Rhineland masters (Meister Eckhart, Tauler, Suso), the Beguines (Marguerite Porete, Mechthild of Magdeburg, Hadewijch), the English contemplatives (Julian of Norwich, Walter Hilton, the anonymous author of the [[cloud-of-unknowing|Cloud of Unknowing]]), Catherine of Siena, Catherine of Genoa. The tradition proliferates into distinct schools and voices, each recognizably working the same material in its own idiom.
Spanish mysticism (16th c.)
The Carmelite reform: Teresa of Ávila (Interior Castle, Way of Perfection, Life) and John of the Cross (Ascent of Mount Carmel, Dark Night of the Soul, Spiritual Canticle, Living Flame of Love) produce together the most detailed cartography of contemplative progression in Christian history. Their work remains foundational for Catholic spiritual direction.
Eastern Orthodox tradition
Running in parallel — and without the breaks that reshape Western Christianity — the Eastern tradition develops hesychasm, the practice of inner stillness centered on the Jesus Prayer (“Lord Jesus Christ, Son of God, have mercy on me, a sinner”). Systematized by Gregory of Sinai and Gregory Palamas (14th c.), whose teaching on the distinction between God’s essence and His uncreated energies settles the Orthodox understanding of theōsis — deification, the actual participation of the creature in God. The whole tradition is gathered in the [[philokalia|Philokalia]], assembled in the 18th century and still central to Orthodox practice today.
Modern (18th c. – present)
The evangelical tradition (John Wesley’s “heart-strangely-warmed,” the Pietists, the Holiness movement, Quakers, Shakers), the nineteenth-century Catholic revival (Thérèse of Lisieux’s little way, Elizabeth of the Trinity), the twentieth-century contemplative retrieval (Thomas Merton, Evelyn Underhill, Simone Weil, Pierre Teilhard de Chardin), and the current ecumenical contemplative movement (Thomas Keating and Basil Pennington’s Centering Prayer, Cynthia Bourgeault, Richard Rohr, the monastic renewal at Bose, Taizé, and elsewhere).
The two ways — apophatic and cataphatic
Running through every stratum is the classical distinction between two complementary paths:
- Cataphatic (kataphatikē) — the affirmative way. God is approached through His positive manifestations: the beauty of creation, the Incarnation, the Scriptures, images, symbols, liturgy, the humanity of Christ. Cataphatic prayer affirms.
- Apophatic (apophatikē) — the negative way. God exceeds every concept, image, and positive predicate. Every name we give Him is simultaneously true and inadequate; apophatic prayer proceeds by unsaying, entering the cloud of unknowing where discursive thought cannot follow.
These are not rival methods but complementary movements. Most mystics combine them: Pseudo-Dionysius is apophatic; Bernard of Clairvaux is cataphatic; Eckhart moves between registers within a single sermon; John of the Cross walks a strict apophatic ascent while the poetry he commentaries on is frankly cataphatic. The health of the tradition is the tension between the two.
The contemplative progression
The tradition has many maps. A composite that most streams would recognize:
- Purgation (via purgativa) — the slow work of moral purification, ascesis, prayer, repentance, the dismantling of obvious self-will.
- Illumination (via illuminativa) — the deepening of prayer, the growth of virtue, the awakening of contemplative capacity. Visions, consolations, experiential certainties may come here, but the tradition is cautious about identifying them with the goal.
- Union (via unitiva) — the sustained indwelling of God in the soul and the soul in God. Experientially various; stably present in those it is given to.
John of the Cross adds an uncomfortable refinement: the passage between illumination and union typically requires two “dark nights” — the dark night of the senses (loss of affective consolation in prayer) and the dark night of the spirit (loss of every remaining form of spiritual self-possession). These are not psychological depressions but purifying passages; the tradition is insistent that they be distinguished from clinical depression and treated differently.
Practice
The mystical tradition is not freestanding; it is the deepening of the ordinary Christian life. Its characteristic practices:
- Lectio Divina — the slow, prayerful reading of scripture in four movements (lectio, meditatio, oratio, contemplatio). Foundational in Benedictine practice and increasingly practiced ecumenically.
- The Divine Office — the seven-times-daily liturgy of the hours that structures monastic life.
- The Eucharist — the sacramental center. Not a mystical practice alongside others but the ordinary means by which, in the tradition’s self-understanding, the faithful already participate in Christ.
- The Jesus Prayer — in the Orthodox hesychast tradition, repeated with the breath, descending from the head into the heart until it prays itself continuously.
- Centering Prayer and contemplative prayer — the modern Trappist retrieval of the Cloud of Unknowing’s method: twenty minutes twice daily, returning to a “sacred word” whenever attention strays.
- Silence, fasting, solitude, spiritual direction — the disciplines that make the other practices more than performances.
Difficulties the tradition carries
- Gender and silencing. The medieval and early-modern tradition produced extraordinary women mystics — Hildegard, Mechthild, Hadewijch, Marguerite, Julian, Teresa — often working under institutional constraints that ranged from patronage to suspicion to, in Marguerite’s case, execution. The tradition’s theology honors them; its institutional history often did not.
- The scholastic-mystical tension. Eckhart was condemned posthumously (1329); John of the Cross was imprisoned by his fellow Carmelites; the Quietist controversy (17th c.) ended Miguel de Molinos and Madame Guyon’s public teaching. The church’s relation to its own mystical extremes has often been uneasy.
- Protestant loss and recovery. The Reformation’s emphasis on justification by faith tended, in some streams, to leave mystical theology behind as Catholic excess. Modern Protestant recovery — via Wesley, the Puritans, and the twentieth-century contemplative movement — is incomplete but ongoing.
- Western appropriation. Twentieth-century interest in Eastern meditative traditions sometimes tempted practitioners to treat Christian mysticism as a weaker cousin of Zen or Advaita. Merton and his successors fought this: the Christian tradition has its own contemplative depth, its own methods, its own theological ground, which should not be mistaken for anything else.
Living tradition
Christian mysticism is more widely practiced now than at any point since the Middle Ages. The monastic and contemplative orders continue; Centering Prayer has tens of thousands of practitioners in weekly groups across North America; the Jesus Prayer is taken up in Orthodox parishes and by non-Orthodox contemplatives alike; retreat centers (St. Meinrad, Gethsemani, St. John’s, Bose, Taizé, the Carmelite houses, the Orthodox monasteries of Mount Athos and beyond) receive a steady flow. Contemplative Outreach, the Shalem Institute, the Center for Action and Contemplation, and dozens of smaller networks carry the formation forward.
What the tradition has always said, it still says:
“All shall be well, and all shall be well, and all manner of thing shall be well.”
— Julian of Norwich, Revelations of Divine Love, ch. 27