Proselytize (sage ability)
Proselytize is an amateur-status sage ability in the studies of Piety and Faith, covering the skill necessary to communicate with local residents or non-player characters, so as to encourage them to embrace the cleric's faith and become weekly attendants at a local temple. In accomplishing the latter, the character must sacrifice one week in personal effort to build a congregation by 10 persons (typically two families, as most effort is directed at the male and female heads of the family).
Proselytization also serves as a pastoral duty, so that the character — remaining in the community instead of departing (even for a day) — will educate the residents and thus encourage one unsanctified family per week to step forward and be immersed. For each family that does this, the local church will increase its weekly income by 1 s.p.