The seventh commandment: Thou Shalt Not Steal
I sometimes like to prank call certain stores to crack jokes but all in good humor and I certainly don’t mean any harm. For example, the other week I prank called Pizza Hut by saying “Is this Pizza Hut? More like Pizza Butt!” Is this gravely wrong?
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Certainly it is sinful…
If you call a business, you are stealing the time, resources, and income that the business owner is paying for or expecting to receive, by taking the time of their employee away from paying customers, away from performing their job responsibilities, and preventing legitimate customers from contacting that business.
Is it a mortal sin - not for me to judge. However, keep in mind, the gravity of sin can change due to the circumstances of those you harm.
The Eighth Commandment: Thou shalt not bare false witness.
In fact, in some places, prank calling 911 would be a crime, and as such the further sin of flouting lawful authority.
ICXC NIKA
When one calls 911 you are reporting to a civil authority that there is an actual event or situation that requires the use of civil resources and you testify to that fact. This is one reason 911 calls are recorded, to be potentially used as tapped testimony in a legal proceeding.
GEddie has hit this nail directly on the head!
In all 50 of the USA it is a criminal offense to prank call 911 to one degree or another.
Worse, say that prank call results in preventing a true emergency from being properly handled such as a fire, burglary, medical event! A prank call could potentially result in harm or even death to someone, loss of property, or both.
Depending on the prank, Federal Government Agencies such as the FBI can become involved… normally not a person who bets; however, I’d lay odds that someone is either going to jail or facing sever financial penalties when this happens!
Prank calling 911 is also theft of service from the citizens who have paid in taxes to purchase and maintain the 911 system.
So again, I am no position to say if this is mortal or not; however, IMHO, it is certainly a very serious sin to prank 911.