Amos 7:7-9

7This is what He has revealed to me: Behold, my Lord was standing by a vertical wall, and in His hand was a plumb line.

8Then Adonai said to me: “What do you see, Amos?” I said: “A plumb line.” Then my Lord said: “Behold, I am setting a plumb line among My people Israel— I will no longer pass over them.

9So the high places of Isaac will become desolate, the sanctuaries of Israel will be laid waste, and I will rise up against the house of Jeroboam with the sword.”