Basic Information. First play written under King James IShakespeare added a lot of things that James would identify with:Male ruleWitchcraft HeirsAn innocent BanquoDrive:Determination and predestinationAn unnatural force. Theme: Equivocation. Definition:Open to two or more interpretations and often intended to mislead; ambiguous. The use of words or expressions susceptible to double significationThe use of equivocation is one of the most important themes in the playThis is especially used by witches!.