by night

Job 24:14-17
When daylight is gone, the murderer rises to kill the poor and needy; in the night he is like a thief. . . .

Psalm 36:4
Even on his bed he plots wickedness; he sets himself on a path that is not good; he does not reject evil.

Proverbs 1:11-16
If they say, "Come along, let us lie in wait for blood, let us ambush the innocent without cause, . . .

Proverbs 4:16
For they cannot sleep unless they do evil, they are deprived of slumber until they make someone fall,

Romans 3:15
Their feet are swift to shed blood;