Shammashim are people who help in a Jewish religious building, like a church helper.
Shammashim are important and helpful in the Jewish religion.
Examples:
The shammashim help in the synagogue.
The shammashim light the candles.
The shammashim clean the floors.
The shammashim are very busy today.
The shammashim are like the superheroes of the synagogue.
The shammashim work hard to help everyone in the synagogue.