Proverbs 12:6
"The words of the wicked are to lie in wait for blood: but the mouth of the upright shall deliver them."
Cross References (ranked by relevance)
In the mouth of the foolish is a rod of pride: but the lips of the wise shall preserve them.
For among my people are found wicked men: they lay wait, as he that setteth snares; they set a trap, they catch men.
Their feet run to evil, and they make haste to shed innocent blood: their thoughts are thoughts of iniquity; wasting and destruction are in their paths.
Now therefore ye with the council signify to the chief captain that he bring him down unto you to morrow, as though ye would enquire something more perfectly concerning him: and we, or ever he come near, are ready to kill him.
And when it was day, certain of the Jews banded together, and bound themselves under a curse, saying that they would neither eat nor drink till they had killed Paul.