Well it turns out that after a quick Google search I discovered the reason these churches did so is because changes in Minnesota gun laws in recent years allowed anyone with a permit to carry a gun in a public place. Several churches sued arguing that for the state to declare that it was alright for someone to carry a gun to church conflicted with their religious rights--imagine that--a church actually understanding Christianity to mean that a person shouldn't carry around a firearm??? The result of the lawsuit was that churches could forbid guns from their properties and could post signs saying so.
I don't know what the result of this week's case will be for gun laws or gun violence in America, but I would like to urge all visitors to First Christian Church of St. Joseph, MO to please leave their guns at home.
Grace and Peace,