Talk to Priest Maxi sitting on a bench west of the town hall to start this quest. Head back to the church and find Jesus hiding behind the seats. After talking to Jesus, return to Priest Maxi and he'll ask you to find Jesus one more time.
Head back to the church then turn off the lights. Point the two spotlights towards the pulpit to reveal Jesus' shadow. Talk to him behind the pulpit to complete the quest.
Rewards:
New FR: Priest Maxi, Jesus
Summon Unlocked: Rosary