The three worshipers quest can be solved using one of your abilities.
1. Open Abilities (H in PC) and go to Mystic Skills.
2. Set Meridian Touch on one of the keybinds.
3. Use Meridian Touch on each of the Worshiping Villagers while the rotating statues are faces to the locked gate.
4. Now go sit down in front of middle statue that says Make offerings.
- There is some chests around this area you can loot before entering the gate.