Shabbat Shalom. Another word with the Hebrew letter "Resh" - ABUNDANT: Great, Plenty or supply of Strength (greatness). One who is abundant in authority such as a Master or Teacher. Also, an archer as one abundant with arrows. Hebrew: רב rav-masc. רבה ra-bah-fem. ....

Would they have called Yeshua "Rav " ? Master/ Teacher ?

Lord, Teacher, Master and King of the Universe.