These two phrases have the same idea and are used together to emphasize how David will not tolerate deceitful people. (See: [[rc://en/ta/man/translate/figs-parallelism]])
David is referring to the city that he is in as "the city of Yahweh." This can be made clear. AT: "from this city, which is Yahweh's city" (See: [[rc://en/ta/man/translate/figs-explicit]])