Deuteronomy 19:13

Thine eye shall not pity him, but thou shall put away the innocent blood from Israel, that it may go well with thee.

1 Kings 2:31

And the king said to him, Do as he has said, and fall upon him, and bury him, that thou may take away the blood, which Joab shed without cause, from me and from my father's house.

Deuteronomy 7:2

and when LORD thy God shall deliver them up before thee, and thou shall smite them, then thou shall utterly destroy them. Thou shall make no covenant with them, nor show mercy to them.

Deuteronomy 7:16

And thou shall consume all the peoples that LORD thy God shall deliver to thee. Thine eye shall not pity them. Neither shall thou serve their gods, for that will be a snare to thee.

Deuteronomy 21:9

So shall thou put away the innocent blood from the midst of thee when thou shall do that which is right in the eyes of LORD.

Deuteronomy 25:12

then thou shall cut off her hand. Thine eye shall have no pity.

Genesis 9:6

Whoever sheds man's blood, by man shall his blood be shed. For in the image of God he made man.

Leviticus 24:17

And he who smites any man mortally shall surely be put to death.

Leviticus 24:21

And he who kills a beast shall make it good. And he who kills a man shall be put to death.

Numbers 35:33-34

So ye shall not pollute the land in which ye are, for blood, it pollutes the land. And no expiation can be made for the land for the blood that is shed in it, but by the blood of him who shed it.

Deuteronomy 13:8

thou shall not consent to him, nor hearken to him. Neither shall thine eye pity him, neither shall thou spare, neither shall thou conceal him,

2 Samuel 21:1

And there was a famine in the days of David three years, year after year; and David sought the face of LORD. And LORD said, It is for Saul, and for his bloody house, because he put to death the Gibeonites.

2 Samuel 21:14

And they buried the bones of Saul and Jonathan his son in the country of Benjamin in Zela, in the sepulcher of Kish his father. And they performed all that the king commanded. And after that God was appealed for the land.

Ezekiel 16:5

No eye pitied thee, to do any of these things to thee, to have compassion upon thee, but thou were cast out in the open field. For thy person was abhorred, in the day that thou were born.

Treasury of Scripture Knowledge

Summary

Thine eye shall not pity him, but thou shalt put away the guilt of innocent blood from Israel, that it may go well with thee.

Bible References

But thou

Deuteronomy 21:9
So shall thou put away the innocent blood from the midst of thee when thou shall do that which is right in the eyes of LORD.
Genesis 9:6
Whoever sheds man's blood, by man shall his blood be shed. For in the image of God he made man.
Leviticus 24:17
And he who smites any man mortally shall surely be put to death.
Numbers 35:33
So ye shall not pollute the land in which ye are, for blood, it pollutes the land. And no expiation can be made for the land for the blood that is shed in it, but by the blood of him who shed it.
2 Samuel 21:1
And there was a famine in the days of David three years, year after year; and David sought the face of LORD. And LORD said, It is for Saul, and for his bloody house, because he put to death the Gibeonites.
1 Kings 2:31
And the king said to him, Do as he has said, and fall upon him, and bury him, that thou may take away the blood, which Joab shed without cause, from me and from my father's house.

General references

Exodus 20:13
Thou shall not murder.
Exodus 21:12
He who smites a man, so that he dies, shall surely be put to death.
Deuteronomy 19:10
that innocent blood not be shed in the midst of thy land, which LORD thy God gives thee for an inheritance, and so blood be upon thee.
Deuteronomy 25:12
then thou shall cut off her hand. Thine eye shall have no pity.