Deuteronomy 19:6

Lest the avenger of blood pursue the manslayer, while his anger is hot, and overtake him, because the way is long, and slay him; whereas he was not worthy of death, inasmuch as he hated the victim not in time past.

Numbers 35:12

And they shall be unto you cities for refuge from the avenger; that the manslayer die not, until he stands before the congregation in judgment.

Deuteronomy 21:22

And if a man has committed a sin worthy of death, and he is to be put to death, and you hang him on a tree:

Joshua 20:5

And if the avenger of blood pursues after him, then they shall not deliver the slayer up into his hand; because he struck his neighbor unintentionally, and hated him not beforehand.

2 Samuel 14:7

And, behold, the whole family is risen against your handmaid, and they said, Deliver him that struck his brother, that we may kill him, for the life of his brother whom he slew; and we will destroy the heir also: and so they shall quench my ember which is left, and shall not leave to my husband either name or remnant upon the earth.

Jeremiah 26:15-16

But know you for certain, that if you put me to death, you shall surely bring innocent blood upon yourselves, and upon this city, and upon its inhabitants: for of a truth the LORD has sent me unto you to speak all these words in your ears.

Treasury of Scripture Knowledge

Summary

Lest the avenger of the blood pursue the slayer, while his heart is hot, and overtake him, because the way is long, and slay him; whereas he was not worthy of death, inasmuch as he hated him not in time past.

In time past

General references

Bible References

The avenger

Numbers 35:12
And they shall be unto you cities for refuge from the avenger; that the manslayer die not, until he stands before the congregation in judgment.
Joshua 20:5
And if the avenger of blood pursues after him, then they shall not deliver the slayer up into his hand; because he struck his neighbor unintentionally, and hated him not beforehand.
2 Samuel 14:7
And, behold, the whole family is risen against your handmaid, and they said, Deliver him that struck his brother, that we may kill him, for the life of his brother whom he slew; and we will destroy the heir also: and so they shall quench my ember which is left, and shall not leave to my husband either name or remnant upon the earth.

Not worthy

Deuteronomy 21:22
And if a man has committed a sin worthy of death, and he is to be put to death, and you hang him on a tree:
Jeremiah 26:15
But know you for certain, that if you put me to death, you shall surely bring innocent blood upon yourselves, and upon this city, and upon its inhabitants: for of a truth the LORD has sent me unto you to speak all these words in your ears.

In time past

Deuteronomy 19:4
And this is the case of the manslayer, who shall flee there, that he may live: Whoever kills his neighbor unintentionally, whom he hated not in time past;

General references

Numbers 35:19
The avenger of blood himself shall slay the murderer: when he meets him, he shall slay him.