The City's Walls Are Salvation, Not Stone

Isaiah's song contrasts two cities through the logic of emotion rather than cold intellect—a distinction Maclaren emphasizes as equally sound as abstract reasoning, merely operating by different laws. Jerusalem's rocky peninsula becomes the symbol, but the true city of God transcends geography. It is invisible yet more real than the fleeting present, which we mistake for reality. The things above are the things which truly are; earthly things are but shadows.

Most striking is Maclaren's treatment of the city's defence: "The city's walls are salvation." God appoints salvation in lieu of all visible fortifications. One hand alone can pile their strength—Yahweh's. Whom He purposes to save are saved; whom He wills to keep safe are kept safe. Here Maclaren rebukes "weak, sense-governed hearts" that crave something more tangible. A parapet on an Alpine road, he observes with characteristic precision, gives no real security but only satisfies imagination. "The sky needs no pillars to hold it up."

Entrance requires righteousness and faithfulness—not arbitrary conditions but rooted in the nature of things itself. The prophet glimpsed this; the gospel articulates it. Revelation's vision echoes Isaiah's song, proclaiming, "Blessed are they that wash their robes that they may enter in through the gate into the city."

Even now, pilgrims may possess citizenship in the heavens, belonging to a community beyond time's sea, though their feet have never trodden golden pavements. This is no mere ideal but the most real polity available to wandering souls.