The Lord showed me a vision of the locusts, the vision of the fire, and the vision of the plumb line.  My prayers were answered according to the Lord’s sovereignty.  My third vision of concerned a plumb line.  A plumb line is used by builders and masons to determine how straight a wall is.  God’s plumb line is His word, and He uses it for measuring spiritual and moral uprightness.  In this case, the people of Israel was being measured.  Were they found to be upright?  How straight is our own wall?