Genesis 4:10

And He said, What hast thou done? The voice of thy brother's blood crieth unto me from the ground. The great Judge now flatly confronts the murderer with the evidence of his crime: The voice of the blood of thy brother, every single drop of it, is crying to Me from the earth. Blood that is shed in malicious murder may not cry with a voice audible to men, but it cries to God, as the Avenger of all crimes, nevertheless; for murder belongs to the deeds that cry to heaven, a fact which lived in the consciousness of even the heathen nations.