Deuteronomy 19:6

Lest the avenger of blood shall 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.

Numbers 35:12

And they shall be to you cities for refuge from the avenger; that the man-slayer may not die, until he stands before the congregation in judgment.

Deuteronomy 21:22

And if a man shall have committed a sin worthy of death, and he must be put to death, and thou shalt hang him on a tree:

Joshua 20:5

And if the avenger of blood shall pursue him, then they shall not deliver the slayer into his hand; because he smote his neighbor ignorantly, and had not hated him before.

2 Samuel 14:7

And behold, the whole family hath risen against thy handmaid, and they said, Deliver him that smote 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 will quench my coal which is left, and will not leave to my husband neither name nor remainder upon the earth.

Jeremiah 26:15-16

But know ye for certain, that if ye put me to death, ye will surely bring innocent blood upon yourselves, upon this city, and upon its inhabitants: for of a truth the LORD hath sent me to 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 to you cities for refuge from the avenger; that the man-slayer may not die, until he stands before the congregation in judgment.
Joshua 20:5
And if the avenger of blood shall pursue him, then they shall not deliver the slayer into his hand; because he smote his neighbor ignorantly, and had not hated him before.
2 Samuel 14:7
And behold, the whole family hath risen against thy handmaid, and they said, Deliver him that smote 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 will quench my coal which is left, and will not leave to my husband neither name nor remainder upon the earth.

Not worthy

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

In time past

Deuteronomy 19:4
And this is the case of the slayer, who shall flee thither, that he may live: Whoever killeth his neighbor ignorantly, whom he hated not in time past;

General references

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