here is a difference between the Prophetic Ministry and the Prophetic Office.  The first is a function, whereas the second is a position.  Let's look a few verses that speak of office to make this clear.

1. Romans 11:13 - For I speak to you Gentiles, inasmuch as I am the apostle of the Gentiles, I magnify my office.

2. 1 Timothy 3:1 - This [is] a true saying, If a man desire the office of a bishop, he desires a good work.

3. 1 Timothy 3:10 - And let these also first be proved; then let them use the office of a deacon, being [found] blameless.

4. Hebrews 7:5 - And truly they that are of the sons of Levi, who receive the office of the priesthood...

In each case you will see that the term office is used to refer to someone who has been permanently appointed to a position.

This is true also of the Prophetic Office.  The ministry of a prophet may at times be displayed by those that are not called to be Prophets as a permanent position.   Paul clarifies this also when he discusses the functioning of ministries in a local church in 1 Corinthians 14:27-31

27 If any person speaks in an [unknown] tongue, [let it be] through two, or at the most [through] three [utterances], and in turn; and let one [person] interpret.
28 But if there is no interpreter, let him remain silent in the church; and let him speak to himself, and to God.
29 Let the prophets speak two or three, and let the other [prophets] judge.
30 If [any thing] is revealed to another [prophet] that is sitting out, let the first [prophet] be quiet.
31 For you may all prophesy one by one, [so] that everyone may learn, and everyone may be comforted.

Here Paul refers to two kinds of prophetic ministry.  The first is what is communicated by the vocal gifts.  Anyone that brings a message from the Lord via tongues, interpretation or prophecy is prophesying.  However there are those who hold the office of a prophet, and they are a separate group altogether.  You may all prophesy in the sense of bringing a word from the Lord, but not all the members of the church have the Prophetic Office.

Another passage that clearly shows the distinction is Acts 21:9

9 And the same man had four daughters, virgins, who prophesied.
10 And as we tarried [there] many days, there came down from Judaea a certain prophet, named Agabus.

Philip had four daughters that exercised a prophetic ministry, but they were not classed as prophets.  Agabus however, held the prophetic office and was referred to as a prophet.

The term is not only used for prophets but also for teachers.  We see both mentioned in Acts 13:1

1 Now there were in the church that was at Antioch certain prophets and teachers; as Barnabas, and Simeon that was called Niger, and Lucius of Cyrene, and Manaen, which had been brought up with Herod the tetrarch, and Saul.

Someone may be able to teach or prophesy, but only when they have been permanently appointed to the office of prophet or teacher can they be called by such a title.   The same applies to the apostolic ministry.  The early apostles, as well as those who followed later and including the apostles of today, have been permanently appointed to that office by the Lord.

Who Appoints A Person To Office?

It has become the common practice amongst today's church organizations to ordain people to ministry.  This usually involves a ceremony, but the important aspect of it is the fact that the person is given credentials by the organization to practice as a minister with that organization.  To qualify for this there is usually a level or knowledge or education that is required, and perhaps a certain amount of experience.  Legislations by governments in various countries also condition this, so that a person is required to have certain qualifications before they can receive ordination or practice the work of a minister.

However all of these appointments are purely administrative and often have nothing to do with a person's spiritual gifts or calling.  Because of this, it has become common practice to refer to those who have been ordained in this way as 'Pastors.'  Such ordination is then subject to the person continuing to hold papers with the organization.   Should they leave the organization or fail to comply with the rules and regulations of the organization they can be struck from the ordination list and have their credentials removed.  In other words, such ordination is not a permanent possession.

But all of these things are foreign to the calling of God.  The New Testament clearly teaches that the leadership ministries of the church are given and appointed by the Lord Jesus Christ, and that these gifts and callings are permanent and irrevocable.   They remain in force until death.  We will look at this a bit more shortly, but let's first consider a passage that shows the difference between ordination by man and ordination by God.

When Moses first led the Israelites out of Egypt, he had to do all the work of counseling them and judging their disputes.  When his father-in-law Jethro saw this, he advised Moses to appoint others to do all the lower level work and to deal personally only with difficult cases.  Moses followed this advice and appointed leaders at different levels

Exodus 18:24 So Moses listened to the advice of his father in law, and did all that he had said.
25 And Moses chose able men out of all Israel, and made them heads over the people, rulers of thousands, rulers of hundreds, rulers of fifties, and rulers of tens.
26 And they judged the people at all seasons: the difficult cases they brought to Moses, but every small matter they judged themselves.

Now these appointments were made by Moses, not God.  And they were subject to being changed.  They depended on Moses' decision rather than God's.  It is true that Moses may have made his choices based on spiritual wisdom, but it was he and not God that appointed the people.

Later on God spoke to Moses and told him to gather together seventy men from the chief leaders in Israel.  Good said that He would then Himself, take of the anointing that was upon Moses and place it on these seventy men also.  In other words, there was going to be a spiritual transfer and these men would receive the same spiritual anointing as Moses.  This was not an administrative appointment, and it was not Moses who was going to do this, but God Himself.  And these were going to be permanent appointments.

Numbers 11:16 And the LORD said unto Moses, Gather unto me seventy men of the elders of Israel, whom you know to be the elders of the people, and officers over them; and bring them to the tabernacle of the congregation, that they may stand there with you.
17 And I will come down and talk with you there: and I will take of the spirit which [is] upon you, and will put [it] upon them; and they shall bear the burden of the people with you, that you bear [it] not yourself alone.

The effects of this transfer were quite clear, every person received the anointing and began to prophesy on a permanent basis.  It was not a once only anointing  This was God at work, not man.

Numbers 11:25 And the LORD came down in a cloud, and spoke to him, and took of the spirit that [was] on him, and gave [it] to the seventy elders: and it occurred, [that], when the spirit rested on them, they prophesied, and did not stop.
26 But two [of the] men remained in the camp, the name of the one [was] Eldad, and the name of the other Medad: and the spirit rested upon them; and they [were] of those that were listed, but did not go out to the tabernacle: and they prophesied in the camp.

Notice that even the two men who did not go out to the ceremony still received the anointing.  This was a work of God and not of man.

The procedure has not changed since then.  God still works exactly the same.   Though men and organisations might lay out their qualifications and appoint and remove people from positions of authority, it is God who calls a person to a ministry office.  This is a sovereign act of God and it is a permanent act.  When God appoints someone to the office of a prophet, then that is what they will be.  Whether they submit to that anointing and exercise their prophetic responsibility is still under their own control, because the Lord never overrides our free will.  But the calling and appointment remain.

Impartation of Ministry

God works through human channels.  And when He ministers His power or anointing He always does it through human vessels.  That is why no one can get saved without a preacher.  It takes the ministry of a member of the Body of Christ to bring about the salvation of a soul.  In the same way, it takes the ministry of someone appointed to office by the Lord to cause the release of a ministry in the life of another.  Let's look at a few examples from Scripture.

Moses and Joshua

We saw how God took the anointing on Moses and gave it also to the seventy elders.   But we see something a little different with Moses and Joshua.  Joshua was Moses' servant and spent a lot of time with him, even when they worshiped together in the tent of meeting.  But there came a time when Moses imparted the ministry and authority that he had to his servant Joshua.  And he did this by the act of laying on of hands.

Deut 34:9 And Joshua the son of Nun was full of the spirit of wisdom; for Moses had laid his hands upon him: and the children of Israel listened to him, and did as the LORD commanded Moses.

As Moses laid his hands on Joshua, the anointing that was within him was imparted, and Joshua began to walk in the same anointing.

Elijah and Elisha

1 Kings 19:19 So he departed from there, and found Elisha the son of Shaphat, who [was] plowing [with] twelve yoke [of oxen] before him, and he was with the twelfth: and Elijah passed by him, and cast his mantle upon him.

Elijah and Elisha held a very similar relationship to Moses and Joshua.  Elisha began his ministry as the servant of Elijah.  We will look at this more when we consider the preparation of a prophet.  But the important thing I want you to see here is that there came an impartation of the anointing that was upon Elijah to Elisha. In his case the anointing was doubled, which made the procedure a little different.  But there was an impartation nevertheless.  It all began the day Elijah cast his mantle over Elisha.  It ended when that same mantle came down upon Elisha as his master was taken to heaven.

Paul and Timothy

Paul taught the principle of impartation in the New Testament.

Romans 1:11 For I long to see you, that I may impart to you some spiritual gift, with the result that you may be established;

We see the same principle of impartation in the life of young Timothy and the others that Paul took with him.  In the case of Timothy the actual impartation is clearly described by Paul in 2 Timothy 1:6 and 1 Timothy 4:14

2 Timothy 1:6 Therefore I want to remind you to stir up the gift of God, which is in you through the laying on of my hands.

1Timothy 4:14 Neglect not the gift that is in you, which was given you by prophecy, with the laying on of the hands of the presbytery.

We see here that there were two procedures that were involved in causing an impartation of spiritual power.  The one was the laying on of hands.  The other was the ministry of prophecy.  Obviously hands were laid on Timothy and a prophetic word was spoken over him.  These resulted in him receiving the ministry he had.

The Fivefold Ministry Offices

There are 5 Ministry Offices mentioned in the New Testament.  These are commonly called the FiveFold Ministry.  However they are far more than just ministry functions.  They are all ministry offices.

Ephesians 4:10 He that descended is the same also that ascended up far above all heavens, that he might fill all things.)
11 And he gave some, apostles; and some, prophets; and some, evangelists; and some, pastors and teachers;

There are some important facts that you need to understand about the ministry offices before you can grasp the importance of the prophetic office.  To help make things clearer, we need to consider one other passage of Scripture

1 Corinthians 12:28 And God has placed some in the church, firstly apostles, secondarily prophets, thirdly teachers, after that miracles, then gifts of healings, supports, directors, various different tongues.
29 [Are] all apostles? [are] all prophets? [are] all teachers? [are] all workers of miracles?
30 Have all the gifts of healing? do all speak with tongues? do all interpret?

Here are the important facts that you need to keep in mind where ministry offices are concerned.

Paul ends his discussion in 1 Corinthians 12 by asking rhetorical questions.  Are all apostles? Are all prophets? Are all teachers? etc.  This means that not everyone can enter into a ministry office by choice.  It is God that calls a person to such a ministry and imparts the office.  However these questions do not mean that a person cannot hold more than one office at a time.

There is no doubt that Paul was a teacher from the early part of his ministry.   And Barnabas was clearly a prophet.  Consider the following passage, which showed how Barnabas and Paul worked together as Prophet and Teacher at Antioch.

Acts 11:22 Then tidings of these things came to the ears of the church which was in Jerusalem: and they sent forth Barnabas, that he should go as far as Antioch.
23 Who, when he came, and had seen the grace of God, was glad, and exhorted them all, that with purpose of heart they would cleave to the Lord.
24 For he was a good man, and full of the Holy Ghost and of faith: and many people were added to the Lord.
25 Then departed Barnabas to Tarsus, to find Saul:
26 And when he had found him, he brought him to Antioch. And it came to pass, that a whole year they assembled themselves with the church, and taught many people. And the disciples were called Christians first in Antioch.

The Church at Antioch started as result of the evangelistic work of some ordinary Christians.  When this happened, the apostles immediately sent them a Prophet in the form of Barnabas, to set the Church in order spiritually.  In this passage we have a good description of the main function of the Prophet in a local assembly.  However after a while Barnabas realized that he was lacking in the teaching ministry and the people needed to be grounded in the Word.  So he went to Tarsus to find Saul, who was clearly a teacher.

Later on in Acts 13:1 we read of the existence at Antioch, of prophets and teachers.   Paul and Barnabas were listed amongst them.  And now God instructs that Paul and Barnabas be set aside for the ministry of apostle.  It is interesting that Barnabas was more prophetic, Paul was more of a teacher.  Yet together they could carry out the ministry of an apostle.  This is because the Apostolic function requires both of these ministries. 

An Apostle is able to be both a prophet and a teacher.  But while He was still only a teacher, Paul needed to have a Prophet with him to complete the ministry.    Later on when Paul and Barnabas had a disagreement and split up, Paul went and found another prophet to accompany him on his journeys.  Paul chose Silas as his new partner.  We are told in Acts 15:32 that Silas was a prophet.

32 And Judas and Silas, being prophets also themselves, exhorted the brethren with many words, and confirmed [them].

Later on in his ministry, Paul writes to Timothy and declares that he was ordained as a Preacher and an Apostle and a Teacher.  He had entered into the fullness of his ministry and developed fully into the apostolic office, which must have included prophetic ministry.

1 Timothy 2:7 Whereunto I am ordained a preacher, and an apostle, (I speak the truth in Christ, [and] lie not;) a teacher of the Gentiles in faith and truth.

Both Paul and Barnabas were called apostles.  And yet they each had an additional ministry office that they did not lose.  So it is possible for a person to hold more than one ministry office at the same time.

The important thing to notice here, is that you do not have to remain in one ministry office, but you can progress to a higher level of office.  Thus the Lord can raise up an evangelist, pastor or teacher to the prophetic office.  When this happens the prophetic office is added to the person, without them losing the previous ministry they had.  Such a person can now minister effectively in both areas.

If you have functioned in one of the other ministry offices you do not need to assume that this is where your calling will remain.  If you are faithful to your ministry it is very possible that the Lord might move you on higher.  The same thing applies to both ministry offices and gifts of the Spirit.  Paul encourages us to earnestly desire the better gifts and to follow after love.  As you do this, the way is open for the Lord to lead you further.