Today is Pentecost. Here is my favorite medieval illumination:

And a lovely bit from the readings in Matins today:

While they received the visible presence of God in the form of fire, the flames of His love enwrapped them. The Holy Ghost Himself is love whence it is that John saith “God is love.” Whosoever therefore loveth God with all his soul, already hath obtained Him Whom he loveth, for no man is able to love God, if He have not gained Him Whom he loveth.

(from a homily by Pope St. Gregory the Great, speaking of the scene in the image above)

And later:

“And My Father will love him, and We will come unto him, and make Our abode with him.” O my dearly beloved brethren, think what a dignity is that, to have God abiding as a guest in our heart…

Salve Maria.