the faithful city become an harlot!was full of judgment; righteousness; but now murderers.

those two women fighting over a baby, after a baby got smothered by co -sleeping were both harlots.
1 kings 3.16

Isaiah 1.21 (KJV)

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21How is the faithful city become an harlot! it was full of judgment; righteousness lodged in it; but now murderers. 

Isaiah 23.15 (KJV)

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15And it shall come to pass in that day, that Tyre shall be forgotten seventy years, according to the days of one king: after the end of seventy years shall Tyre sing as an harlot.