The instructions given by Jonadab to his descendants shape a unique nomadic lifestyle, completely detached from any sense of permanence. By rejecting land ownership and farming, the family was directed to live as wandering shepherds or traveling craftsmen [ביאור שטיינזלץ].
This restriction went far beyond merely choosing not to build houses or plant vineyards. The family was strictly forbidden from owning such properties in any way, whether by purchasing them from others or accepting them as gifts [רד״ק, מצודת דוד, מלבי״ם]. They were not even allowed to stay temporarily in a house built by someone else. Their only permitted shelter was a tent [מלבי״ם]. Pitched in deserts [רש״י] or open fields, these temporary structures could be easily packed and moved, ensuring the family remained transient rather than settling down as permanent residents [מצודת דוד, מצודת ציון]. Historically, this lifestyle fit their background naturally, as they were descendants of converts who did not receive a permanent inheritance of land when the country was divided [רש״י].
The promise of a long life for following these commands is understood as a direct, practical result of living this way. Owning homes, fields, and vineyards ties people to a specific location. During times of crisis, such as famine or war, a person anchored to their property might stay in a dangerous area to protect their wealth, ultimately risking their life alongside their neighbors. A tent dweller is completely free from these burdens. When danger approaches, they can quickly pack their belongings and travel to a safer location [רד״ק, מצודת דוד]. This method of survival mirrors the actions of the nation's forefathers, who wandered in tents from place to place to escape the dangers of famine [רד״ק].
This strategy of avoiding danger perfectly complements another strict rule the family followed, which was the complete avoidance of wine. Wine impairs human judgment and leads to disgraceful behavior. Throughout history, it was a root cause of the destruction and exile experienced by the Israelite tribes [רד״ק, מצודת דוד]. Together, the commitment to living in tents and the refusal to drink wine formed a protective shield, ensuring the family's continued survival.