Deuteronomy 19:13

Thine eye shall not spare him; and thou shalt put away innocent blood from Israel, that it may be 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; and take away the innocent blood, which Joab shed, from me and from the house of my father.

Deuteronomy 7:2

and when Jehovah thy God shall give them up before thee and thou shalt smite them, then shalt thou utterly destroy them: thou shalt make no covenant with them, nor shew mercy unto them.

Deuteronomy 7:16

And thou shalt consume all the peoples that Jehovah thy God will give up unto thee; thine eye shall not spare them, and thou shalt not serve their gods; for that would be a snare unto thee.

Deuteronomy 21:9

So shalt thou put away innocent blood from thy midst, when thou shalt do what is right in the eyes of Jehovah.

Deuteronomy 25:12

thou shalt cut off her hand; thine eye shall not spare.

Genesis 9:6

Whoso sheddeth Man's blood, by Man shall his blood be shed; for in the image of God he hath made Man.

Leviticus 24:17

And if any one smiteth any man mortally, he shall certainly be put to death.

Leviticus 24:21

He that smiteth a beast mortally shall make it good; and he that smiteth a man mortally shall be put to death.

Numbers 35:33-34

And ye shall not pollute the land wherein ye are; for blood, it polluteth the land; and there can be no atonement made for the land, for the blood that hath been shed therein, but by the blood of him that shed it.

Deuteronomy 13:8

thou shalt not consent unto him, nor hearken unto him; neither shall thine eye spare him, neither shalt thou pity him, neither shalt thou screen him,

2 Samuel 21:1

And there was a famine in the days of David three years, year after year; and David inquired of Jehovah. And Jehovah said, It is for Saul, and for his house of blood, because he slew the Gibeonites.

2 Samuel 21:14

And they buried them with the bones of Saul and Jonathan his son in the country of Benjamin in Zela, in the sepulchre of Kish his father; and they did all that the king had commanded. And afterwards God was propitious to the land.

Ezekiel 16:5

No eye pitied thee, to do any of these unto thee, to have compassion upon thee; but thou wast cast out in the open field, from abhorrence of thy person, in the day that thou wast 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 shalt thou put away innocent blood from thy midst, when thou shalt do what is right in the eyes of Jehovah.
Genesis 9:6
Whoso sheddeth Man's blood, by Man shall his blood be shed; for in the image of God he hath made Man.
Leviticus 24:17
And if any one smiteth any man mortally, he shall certainly be put to death.
Numbers 35:33
And ye shall not pollute the land wherein ye are; for blood, it polluteth the land; and there can be no atonement made for the land, for the blood that hath been shed therein, but by the blood of him that shed it.
2 Samuel 21:1
And there was a famine in the days of David three years, year after year; and David inquired of Jehovah. And Jehovah said, It is for Saul, and for his house of blood, because he slew the Gibeonites.
1 Kings 2:31
And the king said to him, Do as he has said, and fall upon him, and bury him; and take away the innocent blood, which Joab shed, from me and from the house of my father.

General references

Exodus 20:13
Thou shalt not kill.
Exodus 21:12
He that striketh a man, so that he die, shall certainly be put to death.
Deuteronomy 19:10
that innocent blood be not shed in the midst of thy land which Jehovah thy God giveth thee for an inheritance, and blood come not upon thee.
Deuteronomy 25:12
thou shalt cut off her hand; thine eye shall not spare.