New International Version

Deuteronomy 19:6-8 New International Version (NIV)

6. Otherwise, the avenger of blood might pursue him in a rage, overtake him if the distance is too great, and kill him even though he is not deserving of death, since he did it to his neighbor without malice aforethought.

7. This is why I command you to set aside for yourselves three cities.

8. If the Lord your God enlarges your territory, as he promised on oath to your ancestors, and gives you the whole land he promised them,