Poppycock.Allow me to say that the Scripture is Joel 2 has nothing to do with TODAY!
Paul disagrees that the examples given in the OT are not for us (ie. believers).
1 Corinthians 10
(6) Now these things took place as examples for us, that we might not desire evil as they did.
.
.
(11) Now these things happened to them as an example, but they were written down for our instruction, on whom the end of the ages has come.
Romans 15
(4) For whatever was written in former days was written for our instruction, that through endurance and through the encouragement of the Scriptures we might have hope.
1 Corinthians 9
(9) For it is written in the Law of Moses, “You shall not muzzle an ox when it treads out the grain.” Is it for oxen that God is concerned?
(10) Does he not certainly speak for our sake? It was written for our sake, because the plowman should plow in hope and the thresher thresh in hope of sharing in the crop.
Acts 17
(11) Now these Jews were more noble than those in Thessalonica; they received the word with all eagerness, examining the Scriptures [which was the OT] daily to see if these things were so.
Not to mention that there were women prophets during the life of Paul.
Luke 2
(36) And there was a prophetess, Anna, the daughter of Phanuel, of the tribe of Asher. She was advanced in years, having lived with her husband seven years from when she was a virgin,
(37) and then as a widow until she was eighty-four. She did not depart from the temple, worshiping with fasting and prayer night and day.
(38) And coming up at that very hour she began to give thanks to God and to speak of him to all who were waiting for the redemption of Jerusalem.
Acts 21
(8) On the next day we departed and came to Caesarea, and we entered the house of Philip the evangelist, who was one of the seven, and stayed with him.
(9) He had four unmarried daughters, who prophesied.
It would be a mistake to think that "last days" can only be a reference to future end times.The Joel prophecy starts with the statement “I will pour out My Spirit.”
Acts states, “. . . in the last days” and then quotes the Joel 2:28-32.
Hebrews 1
(2) but in these last days he has spoken to us by his Son, whom he appointed the heir of all things, through whom also he created the world.
1 Corinthians 10
(11) Now these things happened to them as an example, but they were written down for our instruction, on whom the end of the ages has come.
Now, back to the the term "deacon" [diakonos] that started this discussion ........
1 Timothy 3
(13) For those who serve well as deacons [diakonos] gain a good standing for themselves and also great confidence in the faith that is in Christ Jesus.
Romans 16
(1) I commend to you our sister Phoebe, a servant [diakonos] of the church at Cenchreae,
Ain't that a hoot! A woman diakonos.
I conclude with the words of Paul .......
Galatians 3
(28) There is neither Jew nor Greek, there is neither slave nor free, there is no male and female, for you are all one in Christ Jesus.