Tradition
St. John of the Cross
Spiritual Canticle
Stanza XIV, XV. · Part 3 of 3
28. But it is not to be supposed that these visits of God are always attended by such terrors and distress of nature: that happens to them only who are entering the state of illumination and perfection, and in this kind of communication; for in others they come with great sweetness.
Source: Spiritual Canticle (CCEL)