Jerusalem Jerusalem was a functioning city as early as four hundred years before the time of David. It was never fully captured during the conquest and the period of the judges (Josh 15:63; Judg 1:8, 21), and peaceful relations were evidently established between the autonomous Jebusite enclave and the surrounding Israelites (Judg 19:10-12). So impregnable was Jerusalem that the Old Testament records only three successful invaders: David, Jehoash (2 Kgs 14:11-14), and Nebuchadnezzar of Babylon (2 Kgs 25:1-10). Whatever David’s method of capturing Jerusalem (his use of a water tunnel is debatable—see study note on 5:8), he secured Jerusalem as the political, and eventually spiritual, capital of Israel. Psalm 48 speaks beautifully and powerfully of Jerusalem as a fortress. Its towers, bulwarks, and easily defensible citadels with their rugged terrain could produce a false sense of security, if not idolatry. Psalm 48:1-3 reminds the reader that God’s living presence, not the topography of the city, made Jerusalem safe. Both the Old Testament and the New Testament call Jerusalem a “holy city” (see Neh 11:1, 18; Isa 52:1; Dan 9:24; Matt 4:5; 27:53; Rev 21:2). It is the only city...