I taught college courses for 15 years. I wasn't what you would call a professor, we didn't really have those at our school. I was an adjunct faculty member, which is a fancy word for part-time teacher... although for a stretch there I taught full-time during which period I also completed a masters degree in education. My subjects were usually technical in nature: website development, programming, web design, although I also taught some drawing & illustration courses along the way (I bounced around in college majors as both a student and a teacher).
4 And thou [Israel] shalt be brought down, and shalt speak out of the ground, and thy speech shall be low out of the dust, and thy voice shall be, as of one that hath a familiar spirit, out of the ground, and thy speech shall whisper out of the dust.
When the Lord Jesus Christ lived and ministered among the Jews in the Holy Land, he organized a church among them. Many people do not understand this, but it becomes clear as one gains familiarity with the scriptures. He called 12 men to be apostles, other men to be "seventy" (Luke 10:1 & 17), and gave these men his authority - or priesthood. We know that Peter, the chief apostle, led the church in the absence of Jesus and oversaw further organization and development.
Paul says that the Lord