This exclamation shows Isaiah's anger and sadness about the people of Jerusalem. AT: "See how the people of Jerusalem, who had been faithful to God" (See: [[rc://en/ta/man/translate/figs-metonymy]])
Isaiah compared the people to a woman who is not loyal to her husband but who sleeps with other men for money. The people were no longer loyal to God but were worshiping false gods. AT: "acts like a prostitute" (See: [[rc://en/ta/man/translate/figs-metaphor]])
The word "she" refers to Jerusalem and its people. Those who wrote the Bible often refer to cities as women. AT: "but now the people of Jerusalem are murderers" (See: [[rc://en/ta/man/translate/figs-metaphor]])