Answer: A plumb line, also called a plummet, is a cord with a non-magnetic weight attached to one end. When the cord is held in such a way that the weight can dangle freely, an exact vertical can be determined. Painters and carpenters use plumb lines to keep their work straight. Dialectical behavioral therapy certification. Plumbing Zone - Professional Plumbers Forum Since 2008 A forum community dedicated to professional plumbers. Come join the discussion about the industry, safety, finishing, tools, machinery, projects, styles, scales, reviews, accessories, classifieds, and more!A plumb line, also called a plummet, is a cord with a non-magnetic weight attached to one end. When the cord is held in such a way that the weight can dangle freely, an exact vertical can be determined. Painters and carpenters use plumb lines to keep their work straight. It is difficult, while in the middle of a project, to determine a true horizontal or vertical line without an objective measuring tool, so a plumb line is employed. A plumb line applies the law of gravity to find right angles, to indicate the most direct route from top to bottom, and to keep things plumb. A plumb line doesn’t change or move with the whims of the carpenter. It remains true, and all work must line up with it or risk being crooked.
The term plumb line is used in Scripture in several contexts. The Lord pictures Himself as a builder in Isaiah 28: “See, I lay a stone in Zion, a tested stone, a precious cornerstone for a sure foundation” (Isaiah 28:16). This is a promise of an unshakeable kingdom, with the Messiah in charge. Jesus Christ is the “precious cornerstone” (see Mark 12:10; Acts 4:11; Romans 9:33; 1 Peter 2:6). As the Lord builds His kingdom, He will ensure it is perfect in every way: “I will make justice the measuring line and righteousness the plumb line” (Isaiah 28:17). There will be no crookedness/sin in the kingdom of Christ.
When the Jews returned from captivity in Babylon, they began to rebuild the temple in Jerusalem. For a time, the work languished, and God sent the prophets Zechariah and Haggai to spur the people on to finish the rebuilding. The message was encouraging: do not despair over the small beginnings; God will see to it that the temple is completed, and Zerubbabel the governor will oversee the project. “Whoever has despised the day of small things shall rejoice, and shall see the plumb line in the hand of Zerubbabel” (Zechariah 4:10, ESV).