1 Timothy 3

Overseers are what we call "bishops." This calling is a high one. Today, for similar cultural reason mentioned in the previous chapter, women are largely accepted as bishops in the Episcopal Church.

Deacons are ordained people called to service. Usually, they have a particular gift (teaching, chaplaincy, retirement center, addressing poverty or substance abuse, etc.) Deacons can preach at church but not celebrate the Eucharist (communion.)

My guess is that some of Timothy's leadership had wandered far from  Paul's expectations.