Amos 7:7-8

Thus He showed me: Behold, the Lord stood on a wall made with a plumb line, with a plumb line in His hand. And the LORD said to me, “Amos, what do you see?” And I said, “A plumb line.” Then the Lord said: “Behold, I am setting a plumb line In the midst of My people Israel; I will not pass by them anymore.