In biblical literature, the term "plummet" is often used figuratively to convey the idea of divine judgment, righteousness, and the standard by which God measures His people. The plummet, or plumb line, is a tool used by builders to ensure that structures are vertically true. In the Scriptures, it symbolizes God's perfect standard of justice and righteousness.

One of the most notable references to the plummet is found in the book of Amos. In Amos 7:7-8 , the prophet writes, "This is what He showed me: The Lord was standing by a wall true to plumb, with a plumb line in His hand. 'What do you see, Amos?' He asked. 'A plumb line,' I replied. Then the Lord said, 'Behold, I am setting a plumb line among My people Israel; I will no longer spare them.'" Here, the plumb line represents God's standard of judgment against Israel, indicating that the nation will be measured and found wanting due to their disobedience and idolatry.

The imagery of the plummet is also present in the book of Isaiah. In Isaiah 28:17 , it is written, "I will make justice the measuring line and righteousness the plumb line; hail will sweep away your refuge of lies, and water will flood your hiding place." This passage emphasizes that God's justice and righteousness are the ultimate standards by which all actions and intentions are measured. The plummet serves as a metaphor for the unwavering and impartial nature of God's judgment.

In Zechariah 4:10 , the plummet is mentioned in a context of restoration and rebuilding: "For who has despised the day of small things? But these seven eyes of the LORD, which roam throughout the earth, will rejoice when they see the plumb line in Zerubbabel’s hand." Here, the plummet signifies the careful and precise work of rebuilding the temple, symbolizing God's approval and guidance in the restoration of His people.

The figurative use of the plummet in these passages underscores the importance of aligning oneself with God's standards. It serves as a reminder that God's judgment is precise and that His expectations for righteousness are unwavering. The plummet calls believers to examine their lives, ensuring that they are in line with God's will and purpose.Isaiah 28:17
Judgment also will I lay to the line, and righteousness to the plummet: and the hail shall sweep away the refuge of lies, and the waters shall overflow the hiding place.
Nave's Topical Index

The Scripture a Necessity.
... True, there are depths in our hearts which the plummet of our thinking has not ... Our
conception would have been vague and figurative as that concerning heaven. ...
/.../kuyper/the work of the holy spirit/xiii the scripture a necessity.htm

The Eternity of God
... their plummets to measure the depths of the sea; but what line or plummet shall
we ... There is a figurative description of God in Daniel 7:7. The Ancient of Days ...
//christianbookshelf.org/watson/a body of divinity/3 the eternity of god.htm

Introductory Essay.
... be ascribed to the first person of the Godhead in a figurative sense, than ... Northern
rivers that flows through a narrow chasm whose depth no plummet has sounded ...
//christianbookshelf.org/augustine/on the holy trinity/introductory essay.htm

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