Commentaries:
Jamieson, Fausset, and Brown
Edom refused to give Israel passage through his border, etc.—A churlish refusal obliged them to take another route. (See on Numbers 21:4; Deuteronomy 2:4; and Judges 11:18; see also I Samuel 14:47; II Samuel 8:14, which describe the retribution that was taken.)
Other Jamieson, Fausset, and Brown entries containing Numbers 20:21:
Amos 1:11
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