“The power to bear Mysteries, which the humble man has received, which makes him perfect in every virtue without toil, this is the very power which the blessed apostles received in the form of fire. For its sake the Savior commanded them not to leave Jerusalem until they should receive power from on high, that is to say, the Paraclete, which, being interpreted, is the Spirit of consolation.
And this is the Spirit of divine visions. Concerning this it is said in divine Scripture: ‘Mysteries are revealed to the humble.’ (Ecclus 3:19) The humble are accounted worthy of receiving in themselves this Spirit of revelations Who teaches mysteries.”
St Isaac the Syrian