Okay, kiddo. So, do you like magic and witches? Well, a witches' sabbath is a big gathering of witches where they do magic and celebrate their beliefs.
It's kind of like a big party but a very special one, where they dress up in special clothes and dance around a big bonfire. They might even bring their broomsticks!
Some people believed that witches would meet with the devil himself and do naughty things like sacrificing animals. But that's not true. It's just a gathering where witches share their knowledge and powers, and have fun.
So, when you think of a witches' sabbath, think of a fun party with broomsticks and magic! But don't worry, they won't harm anyone or do anything mean.