This is a mystery. We know not. This unfolds itself most richly when higher grace operates in your soul. Not that every grace-endued child of God advances thereby to such higher learning. Here too there is diversity of gifts.
Some believers lack almost every capacity to enter into the mysteries of the higher life.
Some practice mysticism along the way of the emotions, but continue limited in knowledge. Some acquire a wealth of learning regarding the way of salvation, but remain indifferent to the higher, nobler knowledge of human life. Then such a one stands at the summit of the mountain of God's holiness. A light above the light of the sun dawns upon his horizon, and his knowledge becomes that of the saints made perfect. Instruct me ever more in Thy holy fellowship.