Neither shall ye build house, nor sow seed, nor plant vineyard,nor have [any],.... That is, they were not to build houses, sow seed, or plant vineyards, for themselves, for their own profit and advantage; nor possess either of these through purchase or gift: all this was enjoined them, partly because they were strangers in the land of Israel, as is suggested in the latter part of the verse, and so were to have no inheritance in it; and partly because the pastoral life was what their ancestors had lived; and therefore Jonadab was desirous it should be continued in his posterity; as well as because by this means they would live not envied by the Israelites, among whom they were; since they did not covet to get any part of their possessions into their hands; as also these being their circumstances, upon any public calamity, as sword, famine, or pestilence, they could more easily remove to other places; and likewise, by observing these rules, would not be liable to some sins, as drunkenness, worldly mindedness, &c.
which are often the cause of great calamities.