Numbers 35:33

The Israelites were not to desecrate their land by sparing the murderer; as blood, i.e., bloodshed or murder, desecrated the land, and there was no expiation (יכפּר) to the land for the blood that was shed in it, except through the blood of the man who had shed it, i.e., through the execution of the murderer, by which justice would be satisfied.

We have in this chapter the determination of another question that arose upon the case of the daughters of Zelophehad. God had appointed that they should inherit, Num 27:7. Now here, I. An inconvenience is suggested, in case they should marry into any other tribe (Num 36:1-4). II. It is prevented by a divine appointment that they should marry in their own tribe and family (Num 36:5-7), and this is settled for a rule in like cases (Num 36:8, Num 36:9); and they did marry accordingly to some of their own relations (Num 36:10-12), and with this the book concludes (Num 36:13).

35:33 for murder pollutes the land: If the slayer in either a homicide or involuntary manslaughter were not dealt with as commanded, God regarded the land as polluted, because human bloodshed required death (Gen 4:10-11; 9:6; contrast Exod 21:29-30; see also Lev 18:28; Ezek 36:17-18; Hos 4:2-3). In its stern warning about the evil of murder, this entire passage highlights the absolute value of human life (Exod 20:13).