The tabernacles: Tents are mentioned because it was the custom of these people, particularly the Ishmaelites, to live a migratory or wandering life; encamping sometimes in one place, and sometimes in another, as they found convenience for themselves and cattle; a custom retained by their descendants to the present day.
Edom: 2Ch 20:1, 2Ch 20:10-11
Hagarenes: Gen 25:12-18; 1Ch 5:10, 1Ch 5:19-20, Hagarites