It is a security jar spell, protection jars are used for warding off evil so none of evil may enter your property.
Casting Instructions for ‘Protection Jar’
Set up everything you have on your altar or the ground, where ever you wish to do the charm. Get the herbs and grind them (if you’ve got a cinnamon stick dont grind it) while grinding the herbs just think about protection, and warding away evil. When you are done grinding the herbs put them in the jar
Now then get something to represent your element and put that in too, stir the mix with another cinnamon stick, when done mixing put the cinnamon stick in the jar. Now get the sharp objects and put them down wards( always remember if you want something to come towards you put it up wards, if you want something to go away from you point it down wards, you want protection not the reverse)
Now that the sharp bits are in light the red candle and drip wax on top of the mix in the shape of a pentagram, not a full one but at least scatter it were it would line up. Close the lid and your done with the jar, go outside and dig a small hole, about the size so your fist will fit or bigger depending on the jar dimensions, and put it in the ground.