A Pillar of the Community

A Pillar of the Community is an unmarked quest in Fallout 4.

Detailed walkthrough
The leader of this cult, Brother Thomas, will try to convince the Sole Survivor to join their group. He will make grand statements about improving the lives of everyone in the Commonwealth. If the Sole Survivor agrees to join the group, Thomas will take the Survivor into the back and ask them to forfeit all of their worldly possessions in favor of the Pillars of the Community.

If the Survivor questions this, Thomas will reveal his true intentions as a con-man, and threaten the Survivor's life. It is possible to pass a speech check that allows the Survivor to leave with all of their possessions, without causing a fight. If the player refuses Thomas's proposition, he and all of his followers will immediately become hostile and attack.

If the player character does kill Brother Thomas and his followers, Thomas will respawn during the quest Emogene Takes a Lover. There is a speech check that allows the player to intimidate him, saying that they "killed the last guy running this scam".