It is not about me being called Rabbi. As a Jew though I can still be a teacher, which is a Rabbi. That is Jewish, Judaism, Israel. As for calling someone else Rabbi, do you believe that there are teachers in Israel or in the Church? We are all brethren, even this many years later after them, Christ is our Master.
The question you are dealing with has to do with if anyone can have a teacher other than the Holy Spirit or Jesus or God? Maybe not, but I know that in the Church and in Israel there are teachers. If there are teachers, it is possible for a person to be a teacher if God wants them to be, more so than if they want to be, but there is if God calls them to be a teacher does that mean they are a teacher or they will be a teacher or God wants them to be a teacher whether they are now or not? Because a person who wants to be a teacher and is not a teacher yet either needs training or education even from God, Jesus, and the Holy Spirit and maybe even other people or a school or college or institution or something, but would they delay being called teacher or are they simply or merely looking in to it? Do they need formal teaching to teach someone about God, to teach God's commandments, Christian living, what it means to be a Jew, etc...?
Sharing or sharing the truth in love may or may not be teaching. There are many gifts or ministries in the body (of Christ) the church, the body of Messiah. Maybe someone is an Evangelist, but maybe they (and or a person) can share without the title or gift of Evangelist, Evangelism. Etc....
Shalom.
Jacob