Zechariah 2:1-5: in context

Zechariah sees a man setting out with a measuring line to measure Jerusalem, to see how wide and long it is. But before he can, an angel stops him with a message for the young surveyor: Jerusalem will be inhabited as villages without walls, because there will be so many people and livestock in her. And then the reason: for I, says the LORD, will be to her a wall of fire all around, and I will be the glory in her midst.

The surveyor was going to measure the city for walls, the ordinary way of making a city safe: fix its dimensions, build its defenses, contain it within stone. God stops him with a bigger vision. Do not bother measuring for walls, because the city will overflow any wall you could build, too full of people to be contained, and because it will not need stone walls at all. God himself will be its wall of fire, a defense no enemy can breach, and its glory dwelling in the middle. Two promises stand out. First, God's protection is better than walls; a wall of fire encircling his people is a security no fortress can match, and it does not confine them the way stone does. Second, God will be the glory in her midst, not a distant defender but a presence at the center. It is a picture of a people whose safety and whose glory are both simply the presence of God, around them like fire and among them like light. When God is your wall, you do not need to measure and fortify and contain; his protection is bigger than anything you could build, and his presence in the midst is the glory that makes the city what it is.

Am I anxiously measuring and building walls to secure what only God can protect, when he offers to be himself a wall of fire around his people and the glory in their midst?