How can I get the lids off stubborn jars?

Stubborn lids. Hardware store have specific grabbers to help with lid removal. Handing the jar to someone nearby who has the pincer strength can be the answer. Some have run hot water over the lid with results. Leaving it for awhile and coming back later works too. Good luck. Enjoy the jelly.
This is . Not a typical medical question yet i will give you my advise: throw out the jar with the lid on and with it's content!