Genesis 37:26

37:26 Then Judah said to his brothers, “What profit is there if we kill our brother and cover up his blood?

Genesis 42:22

42:22 Reuben said to them, “Didn’t I say to you, ‘Don’t sin against the boy,’ but you wouldn’t listen? So now we must pay for shedding his blood!” ¹ 

[42:22]  ¹ tn Heb “and also his blood, look, it is required.” God requires compensation, as it were, from those who shed innocent blood (see Gen 9:6). In other words, God exacts punishment for the crime of murder.