Acts 6:4 But we will give ourselves continually to prayer, and to the ministry of the word.
The Greek word translated ‘ministry’ is diakonia; from diakonos which means servant.
1) service, ministering, esp. of those who execute the commands of others
2) of those who by the command of God proclaim and promote religion among men
2a) of the office of Moses
2b) of the office of the apostles and its administration
2c) of the office of prophets, evangelists, elders etc.
3) the ministration of those who render to others the offices of Christian affection esp. those who help meet need by either collecting or distributing of charities
4) the office of the deacon in the church
5) the service of those who prepare and present food
Luke 10:40 But Martha was cumbered about much serving (διακονÎ¯α diakonia), and came to him, and said, Lord, dost thou not care that my sister hath left me to serve alone? bid her therefore that she help me.
1 Corinthians 16:15 I beseech you, brethren, (ye know the house of Stephanas, that it is the firstfruits of Achaia, and that they have addicted themselves to the ministry (διακονÎ¯α diakonia) of the saints,)
Revelation 2:19 I know thy works, and charity, and service (διακονÎ¯α diakonia), and faith, and thy patience, and thy works; and the last to be more than the first.
I hope you find this helpful.