Here's a beautiful prayer given by Peter Marshall, former Chaplain of the Senate in December of 1947:
We thank Thee, O God, for the return of the wondrous spell of this Christmas season the brings its own sweet joy into our jaded and troubled hearts.
Forbid us, Lord that we should celebrate without understanding what we celebrate, or like our counterparts so long ago, fail to see the star or to hear the song of glorious promise.
As our hearts yield to the spirits of Christmas, may we discover that it is Thy Holy Spirit who comes -- not a sentiment, but a power -- to remind us of the only way by which there may be peace on earth and good will among men.
May we not spend Christmas, but keep it, that we may be kept in its hope, through Him who emptied Himself in coming to us that we might be filled with peace and joy in returning to God.