"Today is the prelude of universal joy..."

The Nativity of the Theotokos (source)

  
Today is the prelude of universal joy. Today blows the breeze foretelling salvation, for the barrenness of our nature is dissolved, as the barren [Anna] is shown to be a mother of her who will remain a Virgin after giving birth to her Creator. From [the Theotokos], God, Who is foreign to nature, will come to dwell within, working salvation for the deluded through the flesh, Christ, the Lover-of-man, and the Redeemer of our souls.
-Idiomelon of the Stichera from the Nativity of the Theotokos

(source)

 

The Nativity of the Theotokos (source)

  

Most-holy Theotokos, save us!