When you become aware of increasing ardency in your inner faith and love for God, then you should know that you are bringing Christ to birth within yourself, and that it is He who exalts your soul above terrestrial and visible things and prepares a dwelling-place for it in heaven.
When you perceive that your heart is replete with joy, and poignantly longs for God’s unutterable blessings, then you should realize that you are activated by the divine Spirit.
And when you sense that your intellect is full of ineffable light and the intellections of supernal Wisdom, then you should recognize that the Paraclete is present in your soul, disclosing the treasures of the kingdom of heaven hidden within you; and you should guard yourself strictly as a palace of God and as a dwelling-place of the Spirit.
~Nikitas Stithatos
Prayerful Life 