Simplify the following text for a Grade 8 native English-speaking person.
Original: Rabbi ( in the Hebrew classic Ö ` Ö Ö 1\/4 ribbi ; in the Hebrew modern Ö ` Ö Ö 1\/4 rabbi ) in Judaism signifies `` professor , master '' or literally `` grand '' .
Simplified: Thus , the title gained an irregular plural form : Ö ` Ö Ö 1\/4 Ö Rabbanim ( `` rabbis '' ) , and not Ö ` Ö Ö 1\/4 Rabbai ( `` my Masters '' ) . There is a mitzvah to stand up for a Rabbi or Torah Scholar when they enter your presence .