"Come, let us with holiness celebrate..."

Jesus Christ as an infant (source)

  

Come, let us with holiness celebrate the festival of the glorious name day of the Master, Christ; for in a manner fitting God he is called Jesus today; with this let us also magnify the memory of the Hierarch.

  

The nativity of Christ is all radiant and bright, and traces out today the mystery of the renewal of the age to come; because by the regulation of the Law the Saviour is circumcised, not as God, but as a mortal and the fulfilment of the Law.
  
Fulfilling the Law the Maker of the Law is today willingly circumcised in the flesh, bringing about the circumcision of the winter of sin, and granting grace to cry: Blessed are you the God of our Fathers.

-Troparia from the Canon of the Feast

   

(source)

  

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