What shall we offer Thee, O Christ? for Thou hast appeared on earth as man for our sakes. Of all the creatures made by Thee, each offereth Thee thanksgiving. The Angels offer Thee the hymn; the Heavens, the star; the Magi, their gifts; the shepherds, their wonder; the earth, her cave; the wilderness, the manger; and we offer Thee a Virgin Mother. O God, Who wast before the ages, have mercy on us.
Troparion of Christmas Vespers
(The excellent translation is by Holy Transfiguration Monastery in Boston.)