Channel Soul

When a sentient creature or humanoid within 30 feet of the cleric dies they can use their reaction to try and send that targets soul off to their deity.

The target, despite being dead, can still make a charisma saving throw against the clerics spell save DC to resist being sent to a deity that is not of their choosing. If the target fails their soul is sent off to the clerics deity for whatever purpose that their deity chooses. If the target makes their saving throw their soul instead passes on to whatever their final fate would normally be.

The cleric can also cast this spell as a regular action, however the target must not have been dead more than 1 minute, or their soul will have already departed.

The cleric may receive some benefit from their deity for sending them souls, or maybe not depending on the whims of their deity.