Yahweh is saying that the way the people of Judah are acting does not make sense. This question can be translated as a statement. Alternate translation: "It does not make sense that this people, Jerusalem, has turned away in permanent faithlessness."(See: [[rc://en/ta/man/translate/figs-rquestion]])
The word "Jerusalem" here is a synecdoche for all the people of Judah. Alternate translation: "Judah" (See: [[rc://en/ta/man/translate/figs-synecdoche]])
What the people of Judah were doing is spoken of as if they were clinging to treachery and would not let it go. (See: [[rc://en/ta/man/translate/figs-metaphor]])
The abstract noun "treachery" is spoken of as if it were a physical object that a person could hold on to. It can be translated using the verb "deceive." Holding on to something is a metaphor for loving. Alternate translation: "They refuse to turn away from what deceives them" or "They love the people who deceive them" (See: [[rc://en/ta/man/translate/figs-abstractnouns]] and [[rc://en/ta/man/translate/figs-metaphor]])