a measuring line: the taut cord a builder or surveyor stretches to mark out, size up, or apportion something
At bottom this is a workman's word. It names the length of cord a mason, carpenter, or surveyor pulls tight to lay out a straight edge, take a measurement, or mark where something will be built. Solomon's bronze basin is thirty cubits around by this cord (1 Kings 7:23); a heavenly surveyor paces off the temple river with one in his hand (Ezekiel 47:3).
The striking thing is that one humble tool carries enormous weight, because God stretches the same cord in three opposite directions:
- He stretches it over the earth at creation, like a builder setting out the foundations (Job 38:5).
- He stretches it over a doomed city to measure it for demolition (2 Kings 21:13; Lamentations 2:8; Isaiah 34:11).
- He stretches it again over the ruins to mark them out for rebuilding (Zechariah 1:16; Jeremiah 31:39).
The point of the demolition passages is that the ruin is not chaos but a surveyed, deliberate act: the God who measured the world into being measures a city out of it with the same tool.
From the tool it is a short step to what the tool stands for. In Isaiah 28:17 the cord simply is justice, the fixed standard a society is measured against. In Isaiah 34:17 it marks out an allotted portion, close in sense to the sister word for a measuring rope that also names the share it hands out (חֶבֶל).