worshiper

/W ER1 SH AH0 P ER0/
noun
  1. 1

    A person who worships, especially at a place of assembly for religious services.

    โ€œThe temple was filled with worshippers.โ€

Source: https://en.wiktionary.org/wiki/worshiper, https://en.wiktionary.org/wiki/worshipper