Thematic Bible: Of a plumb-line

This is what he let me see: and I saw the Lord stationed by a wall made straight by a weighted line, and he had a weighted line in his hand. And the Lord said to me, Amos, what do you see? And I said, A weighted line. Then the Lord said, See, I will let down a weighted line among my people Israel; never again will my eyes be shut to their sin: