There are three Biblical terms synonymous with the Pastor. Shepherd (for caring for the sheep), Bishop (overseer, someone has to be in charge), and Elder (someone spiritually mature).
Timothy was instructed in how to teach the church to respond to the Pastor.
A Good minister of Jesus Christ brings the people remembrance so they could be nourished up in the words of faith and good doctrine.
The Pastor is specifically called by God to oversee the flock.