'Plumbline' in the Bible

I will make justice the measuring line, and righteousness the plumb line. The hail will sweep away the refuge of lies, and the waters will overflow the hiding place.

But the pelican and the porcupine will possess it. The owl and the raven will dwell in it. He will stretch the line of confusion over it, and the plumb line of emptiness.

Thus he showed me and behold, the Lord stood beside a wall made by a plumb line, with a plumb line in his hand.

Yahweh said to me, "Amos, what do you see?" I said, "A plumb line." Then the Lord said, "Behold, I will set a plumb line in the midst of my people Israel. I will not again pass by them any more.

Indeed, who despises the day of small things? For these seven shall rejoice, and shall see the plumb line in the hand of Zerubbabel. These are the eyes of Yahweh, which run back and forth through the whole earth."