"The pure wisdom of the Holy Spirit dwelt in your pure heart..."

St. Philothei, the Venerable New-Martyr of Athens (source)

  
The pure wisdom of the Holy Spirit dwelt in your pure heart, O all-blessed Philothei, showing you to be an awesome dispeller of the evil spirits, and an all-perfect and mighty healer of afflictions. Therefore, as you have obtained boldness before God Who loves mankind, ceaselessly intercede that our souls and bodies might be freed from the passions.
-Doxastikon of the Litia for the Feast of St. Philothei of Athens

(source)
  

Through the prayers of our Holy Fathers, Lord Jesus Christ our God, have mercy on us and save us! Amen!