Read the dictionary definition of invoke. All definitions for this word.
1. request earnestly (something from somebody); ask for aid or protection
1. appeal to somebody for help
2. Invoke God in times of trouble
2. cite as an authority; resort to
1. He invoked the law that would save him
2. I appealed to the law of 1900
3. She invoked an ancient law
3. summon into action or bring into existence, often as if by magic
1. raise the specter of unemployment
2. he conjured wild birds in the air
3. call down the spirits from the mountain