Amos 7:7-9
The Lord measures the wall
7 Then the Lord showed this vision to me. The Lord God was standing next to a wall. In his hand was a string with a heavy weight on its end. The Lord was hanging the string down the wall. He was looking to see whether the wall was straight. 8 He asked me, ‘Amos, what do you see?’ I said, ‘You are measuring the wall to see if it is straight.’
The Lord said, ‘Understand this. I am ready to measure my people with this string. I will test them and I will punish them for their sins. I will not forgive them any more.
9 I will send enemies to destroy the holy places of Isaac's descendants. All Israel's holy places will fall down. Enemies will use swords to kill King Jeroboam and his family.’