The attack from the southeast (2 Chr 20:1-20:2)

“After this the Moabites and Ammonites, and with them some of the Meunites, came against King Jehoshaphat for battle. Messengers came and told King Jehoshaphat. ‘A great multitude is coming against you from Edom, from beyond the sea. Already they are at Hazazon-tamar that is, En-gedi.”

This attack is coming from the people of Moab and Edom, southeast of Judah on the other side of the Dead Sea. They were joined by the Meunites, who were a small group also from the southeast side of the Dead Sea. The messengers said that they were already at Hazazon-tamar that is, En-gedi. En-gedi was on the western side of the Dead Sea about 10 miles east of Hebron so that they were pretty close.