Mysticism refers to the experience of a transcendent or divine contact, which is commonly interpreted in Christian tradition to include oneness with God. Christian religious history was significantly influenced by mysticism, which is still relevant today.
Numerous scholarly approaches, such as psychological, comparativist, philosophical, and theological, have been used to study mysticism.

A common core of all mysticism is sought after by those who emphasize a sharp distinction between mystical experience and subsequent interpretation; others maintain that experience and interpretation are not so easily separated and that mysticism is typically associated with a particular religion and dependent upon its teachings.

The Belgian Jesuit Joseph Maréchal, as well as the French philosophers Henri Bergson and Jacques Maritain, conducted some of the most fundamental explorations into mystical knowing.
The relationship between mysticism and morality has been a source of scholarly dispute since William James’ time, although certain issues have long plagued Christian mystics. Is mysticism always consistent with traditional religious beliefs about right and wrong, or is it independent of moral issues? Although the difficulties with mysticism are very simple to detect, solutions appear to be a long way off.
Modern theologians have differed in their assessments of mysticism’s place in Christianity.
Modern Roman Catholicism is where the most extensive theological discussions of mysticism in Christianity take place. Neoscholastic authors, using the authority of Thomas Aquinas and Spanish mystics Teresa of Ávila and John of the Cross, debated whether mystical contemplation was the goal of all Christians or a special grace.