She believed that she was an 'instrument' of God. [=she believed that God was using her to do things; she believed that God was acting through her]
Part of her training as a pilot involved learning to fly by 'instruments'. [=learning to fly only by looking at the instruments in the airplane]
Movies can be useful 'instruments' of social change. [=movies can be used to cause social change]
(..) Hey how are you man. Good. Is this really Eva? Wow, last time I saw you you were very tiny. Are you playing an instrument yet? She started piano last week. Hey when you are a big college kid Will you come and play in my band? -Do you like that? -Would you be my piano player? Excellent, give me five (..)2014 Whiplash