RobH_en_tn/2ki/21/13.md

stretch over Jerusalem the measuring line used against Samaria, and the plumb line used against the house of Ahab

The words "measuring line" and "plumb line" are metaphors for the standards Yahweh uses to judge people. Alternate translation: "judge Jerusalem using the same measure I used when I judged Samaria and the house of Ahab" (See: rc://en/ta/man/translate/figs-metaphor)

against Samaria

Samaria is the capital city and it represents all the people of the kingdom of Israel. Alternate translation: "against the people of Israel" (See: rc://en/ta/man/translate/figs-metonymy)

plumb line

a tool made of a heavy weight and a thin rope used to show if a wall is straight

the house of Ahab

Here "house" represents family. Alternate translation: "the family of Ahab" (See: rc://en/ta/man/translate/figs-metonymy)