Actually, this is better if you can't sleep...

It's tomorrow morning's Psalm in the 1928 Book of Common Prayer, but, what the heck... keep your own Vigil!

The Fifty-Seventh Psalm
BE merciful unto me, O God, be merciful unto me; for my soul trusteth in thee; * and under the shadow of thy wings shall be my refuge, until this tyranny be overpast.
I will call unto the Most High God, * even unto the God that shall perform the cause which I have in hand.
He shall send from heaven, * and save me from the reproof of him that would eat me up.
God shall send forth his mercy and truth: * my soul is among lions;
And I lie even among the children of men, that are set on fire, * whose teeth are spears and arrows, and their tongue a sharp sword.
Set up thyself, O God, above the heavens; * and thy glory above all the earth.
They have laid a net for my feet, and pressed down my soul; * they have digged a pit before me, and are fallen into the midst of it themselves.
My heart is fixed, O God, my heart is fixed; * I will sing and give praise.
Awake up, my glory; awake, lute and harp: * I myself will awake right early.
I will give thanks unto thee, O Lord, among the peoples; * and I will sing unto thee among the nations.
For the greatness of thy mercy reacheth unto the heavens, * and thy truth unto the clouds.
Set up thyself, O God, above the heavens; * and thy glory above all the earth.
GLORY be to the Father, and to the Son, * and to the Holy Ghost;
AS it was in the beginning, is now, and ever shall be, * world without end. Amen.