Psalms 60:9

The strong city. Most likely a reference to Sela, capital of Edom, probably the city later called Petra, which could be approached only through a narrow gorge with rocky, sometimes vertical, walls. The city was rock hewn and practically inaccessible to the invader (see Obadiah 1, 3). David expresses eagerness to capture this stronghold. For an illustrated description of the later Roman city of Petra, see The National Geographic Magazine, 67:129–165, Feb., 1935.

Lead me into Edom. This verse is virtually a war cry. The hoped-for victory was actually achieved by Joab and Abishai during the reign of David (see on 2 Sam. 8:12, 13; see also on 1 Kings 11:15).