apostolates

/AE1 P AH0 S T AH0 L EY0 T S/
noun
  1. 1

    The office, or responsibilities of an apostle.

  2. 2

    A group of people that exists for the spreading of religious doctrine.

Source: https://en.wiktionary.org/wiki/apostolate, https://en.wiktionary.org/wiki/apostolates