Rev 18:9

9 The kings of the earth, who committed sexual immorality and lived wantonly with her, will weep and wail over her, when they look at the smoke of her burning, 

the kings will weep and lament – these include the 10 kings in Rev 17:12, but the meaning of “kings” goes beyond the Reformation, for we shall also see “kings” in Rev 19:18 – all those who hold positions of power and influence because of their relationship with the harlot, the false teachings of mystery Babylon.