1 Timothy 3:8-10 Likewise deacons must be reverent, not double-tongued, not given to much wine, not greedy for money, holding the mystery of the faith with a pure conscience. But let these also first be tested; then let them serve as deacons, being found blameless.

The qualifications of the deacon are much like those of the bishop/pastor/elder from last time.
The word deacon comes from the Greek word diakonos.
This word is used in Romans 16:1 where Paul says, “I commend to you Phoebe our sister, who is a servant of the church in Cenchrea.”
The word servant is diakonos.
For me, a deacon is not a leader of the church, like the pastor, but a leader of the church in servitude.
Should a deacon have the ability to teach others. I think all Christians should have the ability to teach others in the simplest of things.
But teaching is a gift of the Spirit and not everyone is anointed as such.
The qualifications and characteristics mentioned for the deacon are good qualifications for all servants of the church.
Jesus said the gates of hell would not prevail against the church but the gates of hell have surely tried over the past few years with many leaders in the church succumbing to worldly temptations that directly affect many things Paul mentions for pastors and deacons.
The church, and Christianity as a whole, would have more influence in the world if the leaders and servants lived as the Lord commands us to.