Isaiah 26:9

When I remember thee upon my bed, and meditate on thee in the night watches.

In the day of my trouble I sought the Lord: my sore ran in the night, and ceased not: my soul refused to be comforted.

At midnight I will rise to give thanks unto thee because of thy righteous judgments.

My soul waiteth for the Lord more than they that watch for the morning: I say, more than they that watch for the morning.

By night on my bed I sought him whom my soul loveth: I sought him, but I found him not. I will rise now, and go about the city in the streets, and in the broad ways I will seek him whom my soul loveth: I sought him, but I found him not. The watchmen that go about the city found me: to whom I said, Saw ye him whom my soul loveth? It was but a little that I passed from them, but I found him whom my soul loveth: I held him, and would not let him go, until I had brought him into my mother's house, and into the chamber of her that conceived me.

I sleep, but my heart waketh: it is the voice of my beloved that knocketh, saying, Open to me, my sister, my love, my dove, my undefiled: for my head is filled with dew, and my locks with the drops of the night. I have put off my coat; how shall I put it on? I have washed my feet; how shall I defile them? My beloved put in his hand by the hole of the door, and my bowels were moved for him. I rose up to open to my beloved; and my hands dropped with myrrh, and my fingers with sweet smelling myrrh, upon the handles of the lock. I opened to my beloved; but my beloved had withdrawn himself, and was gone: my soul failed when he spake: I sought him, but I could not find him; I called him, but he gave me no answer. The watchmen that went about the city found me, they smote me, they wounded me; the keepers of the walls took away my veil from me. I charge you, O daughters of Jerusalem, if ye find my beloved, that ye tell him, that I am sick of love.

And it came to pass in those days, that he went out into a mountain to pray, and continued all night in prayer to God.