Amos 7:7-8

⁷Thus he showed me: and, behold, the Lord stood beside a wall made by a plumb-line, with a plumb-line in his hand. ⁸Yahweh said to me, Amos, what see you? I said, A plumb-line. Then said the Lord, Behold, I will set a plumb-line in the midst of my people Israel; I will not again pass by them any more;