All 4 Uses

congregation
in
The Hiding Place
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Both the village of Made and the congregation of Willem's church had declined in recent years.†
p. 56.9

congregation = people who worship together in the same building
I looked around at his congregation of sturdy villagers and farmers and saw that they did not care for such ideas.†
p. 57.6
The minister he was assisting, he wrote, had turned the parish calling over to him: it was a wealthy congregation and large contributors expected frequent and unhurried visits from the clergy.†
p. 59.4
Willem had long since left the parish ministry, where his habit of speaking the hard truth had made a succession of congregations unhappy, and had started his nursing home in Hilversum, thirty miles from Haarlem.†
p. 71.7 *

Definitions:

(1) (congregation as in: the congregation voted)
people who worship together in the same building
(2) (meaning too rare to warrant focus)
Much more rarely, congregation can reference any group of people, animals, or things collected together.