'Night' in the Bible

By night on my bed, I sought him whom my soul loves. I sought him, but I didn't find him.

They all handle the sword, and are expert in war. Every man has his sword on his thigh, because of fear in the night.

I was asleep, but my heart was awake. It is the voice of my beloved who knocks: "Open to me, my sister, my love, my dove, my undefiled; for my head is filled with dew, and my hair with the dampness of the night."