Glory be to God in the highest, and on earth peace, goodwill towards men; for unto us is born in this season a Saviour, who is Christ the Lord. We praise thee, we bless thee, we glorify thee, we give thanks to thee, for this greatest of thy mercies, O Lord God, heavenly King, God the Father almighty.
–Thomas Ken
In the Orthodox tradition yesterday was the last day of the Christmas feast. Today, being the eve of Theophany, is a fast day.