The word and the function
The Greek word is διάκονος (diakonos), a servant. Throughout the New Testament it is used for someone who waits on a table, runs an errand, attends to a practical need. Jesus used it of anyone who would be great among His people (Matt 20:26), so it describes every Christian before it describes anyone in particular.
In 1 Timothy 3, Paul calls out a specific service function in the Body of Christ named “deacon” or “servant”. It first arose in Acts 6 when the church had grown large enough that the daily care of widows was being overlooked.
The function is practical service at that kind of scale — organised care for the poor, widows, and other substantial material needs.
It is not desirable for us to neglect the word of God in order to serve tables. Therefore, brethren, select from among you seven men of good reputation, full of the Spirit and of wisdom, whom we may put in charge of this task. But we will devote ourselves to prayer and to the ministry of the word.
Acts 6:2–4 NASB 95
Who is recognised
To be recognised in this capacity, men must be dignified, not double-tongued, not addicted to much wine, not greedy for dishonest gain, holding the mystery of the faith with a clear conscience, and first tested (1 Timothy 3:8–10). Women who serve in this way must likewise be dignified, not slanderers, temperate, and faithful in all things (1 Timothy 3:11).
Paul adds that they manage their households well, and that those who serve well gain a good standing and great confidence in the faith (1 Tim 3:12–13). Beyond that the letters say little. Deacons are greeted alongside the overseers at Philippi (Phil 1:1), and Phoebe is commended to the Romans as a διάκονος (diakonos) of the church at Cenchreae, a helper and patron of many (Rom 16:1–2).
In our context
In our context this means that if practical needs grow beyond what households can quietly carry (ongoing care for the poor, widows, or similar), we recognise people of tested character to take responsibility for that service, so the gatherings can stay focused on the Word, prayer, and mutual discipleship.
Generally speaking, needs that come up are met by someone noticing and quietly acting, which is what Money & giving describes. Deacons answer a need that has already outgrown that, rather than something put in place ahead of one.Acts 6:1–6; 1 Timothy 3:8–13; Philippians 1:1; Romans 16:1–2