Deuteronomy 19:1-13 New American Bible (Revised Edition) (NABRE)
Cities of Refuge. 1 When the Lord, your God, cuts down the nations whose land the Lord, your God, is giving you, and you have dispossessed them and settled in their cities and houses, 2 you shall set apart three cities[a] in the land the Lord, your God, is giving you to possess. 3 You shall measure the distances and divide into three regions the land of which the Lord, your God, is giving you possession, so that every homicide will be able to find a refuge.
4 This is the case of a homicide who may take refuge there and live: when someone strikes down a neighbor unintentionally and not out of previous hatred. 5 For example, if someone goes with a neighbor to a forest to cut wood, wielding an ax to cut down a tree, and its head flies off the handle and hits the neighbor a mortal blow, such a person may take refuge in one of these cities and live. 6 Should the distance be too great, the avenger of blood[b] might in hot anger pursue, overtake, and strike the killer dead, even though that one does not deserve the death penalty since there had been no previous hatred; 7 for this reason I command you: Set apart three cities.
8 But if the Lord, your God, enlarges your territory, as he swore to your ancestors, and gives you all the land he promised your ancestors he would give, 9 because you carefully observe this whole commandment which I give you today, loving the Lord, your God, and ever walking in his ways, then add three more cities to these three. 10 Thus, in the land which the Lord, your God, is giving you as a heritage, innocent blood will not be shed and you will not become guilty of bloodshed.
11 However, if someone, hating a neighbor, lies in wait, attacks, and strikes the neighbor dead, and then flees to one of these cities, 12 the elders of the killer’s own city shall send and have the killer taken from there, to be handed over to the avenger of blood and slain. 13 Do not show pity, but purge from Israel the innocent blood, so that it may go well with you.