In the early Church, that is before 313 AD ALL the Pastors/Teachers/Elders/Bishops (which are names for the same ministry gift) worked in secular jobs, all this changed after Constantine issued the Edict of Toleration (Milan) when he gave the Church power wealth and position (which they then relied upon), before this the Church had been persecuted and relied upon God!
So after 313 AD in came unbelief, worldliness and coveteousness and out went faith and the power and presence of the Holy Spirit.
The Protestant Church has generally also followed the pattern of the Roman Catholic Church!