I had an accident today in my car.  I think i might need a lawyer.
I think you do too.  At least some kind of person who practices law as a paralegal.
What will a lawyer do for me?
They solve specific individualized legal issues and provide law services.
Where did the law profession originate?
Well in practice, legal jurisdictions can exercise their right to determine who actually is a lawyer.  So as far back as they've been determining that!