Deuteronomy 19:6

otherwise the avenger of blood might pursue the offender in the heat of anger, and overtake him, because it is a long way, and take his life, even though he did not deserve to die, since he did not hate his neighbor beforehand.

Numbers 35:12

The cities shall be to you as a refuge from the avenger, so that the one who has caused the death of another will not be killed until he has had a [fair] trial before the congregation.

Deuteronomy 21:22

“And if a man has committed a sin worthy of death, and he is put to death and [afterward] you hang him on a tree [as a public example],

Joshua 20:5

If the blood avenger pursues him, they shall not hand the offender (manslayer) over to him, because he killed his neighbor unintentionally and without premeditation and did not hate him beforehand.

2 Samuel 14:7

Now behold, the entire family has risen against your maidservant, and they say, ‘Hand over the one who killed his brother, so that we may put him to death [to pay] for the life of his brother whom he killed and destroy the heir also.’ By doing this they will extinguish my coal that is left, leaving my husband without a name or a remnant (heir) on the face of the earth.”

Jeremiah 26:15-16

But know for certain that if you put me to death, you will bring innocent blood on yourselves and on this city and on its inhabitants, for in truth the Lord has sent me to you to speak all these words in your hearing.”

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
The cities shall be to you as a refuge from the avenger, so that the one who has caused the death of another will not be killed until he has had a [fair] trial before the congregation.
Joshua 20:5
If the blood avenger pursues him, they shall not hand the offender (manslayer) over to him, because he killed his neighbor unintentionally and without premeditation and did not hate him beforehand.
2 Samuel 14:7
Now behold, the entire family has risen against your maidservant, and they say, ‘Hand over the one who killed his brother, so that we may put him to death [to pay] for the life of his brother whom he killed and destroy the heir also.’ By doing this they will extinguish my coal that is left, leaving my husband without a name or a remnant (heir) on the face of the earth.”

Not worthy

Deuteronomy 21:22
“And if a man has committed a sin worthy of death, and he is put to death and [afterward] you hang him on a tree [as a public example],
Jeremiah 26:15
But know for certain that if you put me to death, you will bring innocent blood on yourselves and on this city and on its inhabitants, for in truth the Lord has sent me to you to speak all these words in your hearing.”

In time past

Deuteronomy 19:4
“Now this is the case of the offender (manslayer) who may escape there and live [protected from vengeance]: when he kills his neighbor unintentionally, not having hated him previously—

General references

Numbers 35:19
The blood avenger shall himself put the murderer to death; he shall put him to death when he meets him.