And the suburbs of the cities, which ye shall give unto the Levites, shall reach from the wall of the city and outward a thousand cubits round about.

Wesley's Notes

35:4 A thousand cubits - In the next verse it is two thousand. But this verse and the next do not speak to the same thing; this speaks of the space from whence the suburbs shall be measured, the next speaks of the space unto which that measure shall be extended; and the words may very well be read thus. And the suburbs - Shall be from the wall of the city and from without it, or, from the outward parts of it, even from a thousand cubits round about. Which are mentioned not as the thing measured, but as the space from which the measuring line should begin. And then it follows, Nu 35:5. And ye shall measure from without the city, (not from the wall of the city, as said before Nu 35:4, but from without it, that is, from the said outward space of a thousand cubits without the wall of the city round about) on the east side two thousand cubits. So in truth there were three thousand cubits from the wall of the city, whereof one thousand probably were for out - houses, stalls for cattle, gardens, vineyards and olive - yards, and the other two thousand for pasture, which are therefore called the field of the suburbs, Lev 25:34, by way of distinction from the suburbs themselves, which consist of the first thousand cubits from the wall of the city.

Matthew Henry's Concise Commentary

35:1-8 The cities of the priests and Levites were not only to accommodate them, but to place them, as religious teachers, in several parts of the land. For though the typical service of the tabernacle or temple was only in one place, the preaching of the word of God, and prayer and praise, were not thus confined. These cities were to be given out of each tribe. Each thus made a grateful acknowledgement to God. Each tribe had the benefit of the Levites dwelling amongst them, to teach them the knowledge of the Lord; thus no parts of the country were left to sit in darkness. The gospel provides that he who is taught in the word, should communicate to him that teaches, in all good things, Ga 6:6. We are to free God's ministers from distracting cares, and to leave them at leisure for the duties of their station; so that they may be wholly employed therein, and avail themselves of every opportunity, by acts of kindness, to gain the good-will of the people, and to draw their attention.