The verse in (Genesis 13:18) is the closing note of a long chapter. Abram pulls up his tent, moves south, and pitches it in the vale of Mamre at Hebron. He builds an altar.
Targum Pseudo-Jonathan adds one agricultural detail that most translators gloss over: Abram stretched his tent (and made folds) for oxen and sheep. The Aramaic notices the livestock pens. This is not a footnote. The Targumist is telling you that Abram's camp at Hebron was not a devotional retreat. It was a working ranch. The altar stands among the sheepfolds.
This is the Targum's quiet genius. It refuses to separate the sacred and the material. The man who prays in the Name (Genesis 12:8) is the same man who fences a paddock. The altar at Mamre is a few paces from the drinking troughs. Holiness in this tradition does not require a scenic separation from labor. Holiness happens in the middle of a functioning household.
And Hebron itself becomes theologically heavy from this moment forward. The oaks of Mamre will be where the three visitors appear (Genesis 18). The cave of Machpelah that Abram will buy for Sarah's burial (Genesis 23) is in the same landscape. Hebron becomes the southern capital of the patriarchal age because Abram first pitched a tent for sheep there and built an altar next to them.
The Targumist is sketching a spiritual principle that will carry the whole book. You do not find the altar by fleeing the world. You find it by building a proper pen for your animals, and then placing the stones of worship where you can see both at once.