The phrase "were power of" can be expressed in several other ways, depending on the context and intended meaning. Some possible synonyms for this phrase could be "had the ability to," "possessed the strength to," "wielded the capacity for," "commanded the authority to," or "exerted significant influence over." These alternatives may allow for more nuanced or specific descriptions of the particular type or degree of power being referred to. By varying the language used, writers can create a more dynamic and engaging text that effectively conveys their intended meaning to readers.