Numbers 35:4

4.And the suburbs of the cities. A discrepancy here appears, from whence a question arises; for Moses first limits the suburbs to a thousand cubits from the city in every direction; and then seems to extend them to two thousand. Some thus explain the difficulty, viz., that the parts nearest to the city were destined for cottages and gardens; and that then there was another space of a thousand cubits left free for their flocks and herds; but this seems only to be invented, in order to elude by the subterfuge the contradiction objected to. My own opinion rather is, that after Moses had given them a boundary of a thousand cubits on every side, he proceeds to shew the way in which they were to be measured, that thus he may obviate all the quarrels which might aria: from their neighbors. It is plain that, when he repeats the same thing twice, the latter verse is only an explanation of the former; and thus it would be absurd, that after having fixed a thousand cubits, he should immediately double that number. But it will be all very consistent, if this measurement be taken in a circuit; for if you draw a circle, and then a line from the center to the circumference, that line will be about a tenth part of the whole circumference; compare then the fourth part of the circle with the straight line which goes to the center, and it will be greater by one part and a half. But, if you leave a thousand cubits for the city, the two thousand cubits (199) in the four parts of the circumference will correspond with one thousand cubits from the city towards each of the boundaries.

It is afterwards prescribed, in accordance with equity, that a greater or less number of cities should be taken according to the size of the possessions belonging to each tribe; for, just as in paying tax or tribute, regard is had to each man’s means, so it was just that every tribe should contribute equitably in proportion to its abundance. As to the cities of refuge, I now omit to explain what their condition was, because this matter relates to the Sixth Commandment; only let us observe that the wretched exiles were entrusted to the care of the Levites, that they might be more safely guarded. Besides, it was probable that those who presided over holy things would be upright and honest judges, so as not to admit men indiscriminately out of hope of advantage, or from carelessness, but only to protect the innocent, after duly examining their case.