What does this passage mean?

"His doings tend... towards what is good and salutary. First, His coming is gentle; the perception of Him is fragrant; His burden most light; beams of light and knowledge gleam forth before His coming. He comes with the bowels of a true guardian: for He comes to save, and to heal, to teach, to admonish, to strengthen, to exhort, to enlighten the mind, first of him who receives Him, and afterwards of others also, through him. And as a man, who being previously in darkness then suddenly beholds the sun, is enlightened in his bodily sight, and sees plainly things which he saw not, so likewise he to whom the Holy Ghost is vouchsafed, is enlightened in his soul, and sees things beyond man's sight, which he knew not; his body is on earth, yet his soul mirrors forth the heavens."

~ St. Cyril of Jerusalem (4th c) Jerusalem Catecheses