This is a Biblical view on what we are not to be called,yet are instead to call Jesus the Christ.
Matthew 23:8
But you be not called Rabbi: for one is your Teacher, even Christ; and all you are brothers.
Rabbi:The title of a rabbi (a Jewish scholar or teacher); used before or instead of the rabbi’s name.
Teacher:
Teach:To show (someone) the way; to guide, conduct; to point, indicate.
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-er:A person whose occupation is (the noun).
Matthew 23:10
And do not accept the name of ‘leader,’ for your Leader is one alone–the Christ.
From Middle English leder,ledere, from Old English lǣdere (“leader”), equivalent to lead + -er
Lead:Cognate with German leiten (“to lead, manage, conduct”).
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-er:A person whose occupation is (the noun).
John 10:16
And other sheep I have, which are not of this fold: them also I must bring, and they shall hear my voice: and they shall become one flock, one shepherd.
The word “pastor” derives from the Latin noun pastor which means “shepherd” and is derived from the verb pascere – “to lead to pasture, set to grazing, cause to eat”.
Summary:
When Jesus refers to Teacher,he is referring to the Rabbi who is a teacher of the Jewish Laws.
We have one rabbi,leader and pastor in Jesus the Christ