¹⁶Therefore thus saith the Lord GOD, Behold, I lay in Zion for a foundation a stone, a tried stone, a precious corner stone, a sure foundation: he that believeth shall not make haste.

 ¹⁷Judgment 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.

 ¹⁸And your covenant with death shall be disannulled, and your agreement with hell shall not stand; when the overflowing scourge shall pass through, then ye shall be trodden down by it.

Why would any want make a covenant unless it would benefit them, and then they would do the work for that which it made a covenant with.

Plummet \Plum"met\, n. [OE. plommet, OF. plommet, fr. plom,
     plum, lead, F. plomb. See Plumb.]
     1. A piece of lead attached to a line, used in sounding the
        depth of water.
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              I'll sink him deeper than e'er plummet sounded.
                                                    --Shak.
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     2. A plumb bob or a plumb line. See under Plumb, n.
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     3. Hence, any weight.
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     4. A piece of lead formerly used by school children to rule
        paper for writing.
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     Plummet line, a line with a plummet; a sounding line.
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Romans 7:24 (King James Version)