Sentence:  Oh, by what plots, by what forswearings, betrayings, oppressions, imprisonments, tortures, poisonings, and under what reasons of state and politic <WSD>subtilty</WSD>, have these forenamed kings ... pulled the vengeance of God upon themselves, and upon their prudent ministers! 
Meaning of the word marked with <WSD> tags:  Subtlety; slyness in design; cunning; artifice