Of Edom, i.e. of the Edomites, or the children of Seir, as they are called, 2Ch_25:11; either because they dwelt in Seir; see Gen_36:8; or because these people were confederates. And he invaded these people because they were subjects to his kingdom, from which they had revolted in Joram’s days, 2Ki_8:20.
The valley of salt; which was the land of Edom; of which see 2Sa_8:13Psa_60:1.
Selah, or,
the rock; the chief city of that part of Arabia, called by other authors Petra, which signifies a rock, because it was built upon a rock, 2Ch_25:12.
Joktheel, which signifies the obedience of God, i.e. given him by God as a reward of his obedience to God’s message by the prophet, 2Ch_25:8,9.