Those who feel themselves incompetent to safely store or use weapons shouldn’t have them. Same folks should probably turn in their old kitchen knives. I’m fine with voluntary gun turn-ins, except for the high possibility that the firearms actually belong to someone else, and the downside of the occasional historically valuable firearm being wrecked.
I’m curious as to whether this church has a proper FFL since it is reportedly transferring possession of large numbers of firearms.
The other concern is “was the gun actually used in a crime recently?”