Church organization

These pastoral epistles lay out a church organization concerning the character and requirements for bishops, elders, deacons, and widows.  Some scholars have claimed that these offices could not have appeared during Paul’s lifetime.  In terms of theology, some scholars claim that the pastorals reflect more the characteristics of second century proto-orthodox church thought, than those of the first century.  Could you tell the difference between the end of the first century and the early second century?