You are not to pollute the land in which you are. Blood pollutes the land, and no atonement can be made for land polluted by bloodshed except by the blood of the one who sheds it.
and he gave them into the hands of the Gibeonites. So they hanged them on the hill before Adonai, so that all seven fell together. They were put to death during the days of harvest, at the beginning of barley harvest.
May it whirl on Joab’s head and on all his father’s house. May the house of Joab never be without someone with discharge or tza'arat, lame or one fallen by the sword or one who lacks food.”
Then the king commanded him: “Do as he has said—strike him down. Then bury him. So you will remove the blood that Joab shed without cause, from me and from my father’s house.
For behold, Adonai is coming out from His place to punish inhabitants of the earth for iniquity. The earth will disclose her bloodshed, no longer covering up her slain.
First I will repay them double for their iniquity and their sin, because they have profaned My land, and they have filled My possession with the carcasses of their vile things and their abominations.”
Only know for certain that, if you put me to death, you will bring innocent blood on yourselves, on this city, and on its inhabitants. For in truth Adonai has sent me to you to speak all these words in your ears.”
His body is not to remain all night on the tree—instead you must certainly bury him the same day, for anyone hanged is a curse of God. You must not defile your land that Adonai your God is giving you as an inheritance.
in order that the violence done to Jerubbaal’s 70 sons might come due, so their blood might be laid on their brother Abimelech who slew them, and on the lords of Shechem who strengthened his hands to slay his brothers.