אלפים באמה, 1000 cubits described as מגרש, open space, the balance devoted to fields and vineyards.

YOU SHALL PROVIDE [V'HIKRITEM]. You shall prepare.

את שלש הערים תתנו מעבר לירדן, the ones Moses had already set aside for this purpose as we know from Deuteronomy 4,41.

עד מות הכהן הגדול; according to the plain meaning of the text the word is used to described the senior judge. The idea of “lifetime” imprisonment referring to the lifetime of the judge who imposed the sentence occurs in this sense also in Isaiah 14,17 אסיריו לא פתח ביתו, “he never released his prisoners.”

ולא תקחו כופר, he must not be released by paying a financial indemnity to the family of the victim. [whereas the Torah had legislated monetary compensation for injuries caused to the victim, such as loss of eye, tooth, etc. Ed.]

כי אם בדם שפכו. As if the Torah had written כי אם בדם האיש אשר שופך את הדם, ”only blood spilled by the killer of the murdered party does not contaminate the Holy Land but cleanses it from blood spilled innocently.” [this is the way I understand the author. Do not forget that normally spilling blood in the Holy Land contaminates its soil, whereas here the blood of the murderer does the very oppsosite. Ed.]