Numbers 35:32-33
The region east of Jordan was nearly as long as that on the west, and therefore three cities were appointed in each division. One or other of these cities would be within half a day's journey of every part of the land; and as it would rarely happen that the avenger of blood would be on the spot, and none had a right to assault or detain the manslayer, at least if no malicious intention was manifest, the unhappy men would, therefore, get the start of their adversaries, and very few of them be overtaken before they gained the place of refuge. But then they must forsake their families, employments, most important interests, and dearest comforts; and they must neither loiter nor yield to weariness, nor regard difficulties, nor slacken their pace, till they had got safe within the walls of the city. The Jewish writers inform us, that to afford every facility to those who thus fled for their life, the road to these cities was always preserved in good repair; and way-posts, upon which was inscribed REFUGE were placed wherever needful, that they might not so much as hesitate for a moment.
pollute ......... defiles <02610> [it defileth.]
land ......... land .... land .... cleansed ............... person <0776 03722> [the land cannot be cleansed. Heb. there can be no expiation for the land.]