Pastors are those that oversee the Church. They are the head of the local Churches. Their job is much like a shepherd- to keep and tend the flock.
General references
And when they had ordained them elders in every church, and had prayed with fasting, they commended them to the Lord, on whom they believed. (Act 14:23 KJV)
And certain men which came down from Judaea taught the brethren, and said, Except ye be circumcised after the manner of Moses, ye cannot be saved.
2 When therefore Paul and Barnabas had no small dissension and disputation with them, they determined that Paul and Barnabas, and certain other of them, should go up to Jerusalem unto the apostles and elders about this question.
3 And being brought on their way by the church, they passed through Phenice and Samaria, declaring the conversion of the Gentiles: and they caused great joy unto all the brethren.
4 And when they were come to Jerusalem, they were received of the church, and of the apostles and elders, and they declared all things that God had done with them.
5 But there rose up certain of the sect of the Pharisees which believed, saying, That it was needful to circumcise them, and to command them to keep the law of Moses.
6 And the apostles and elders came together for to consider of this matter. (Act 15:1-6 KJV)
22 Then pleased it the apostles and elders, with the whole church, to send chosen men of their own company to Antioch with Paul and Barnabas; namely, Judas surnamed Barsabas, and Silas, chief men among the brethren:
23 And they wrote letters by them after this manner; The apostles and elders and brethren send greeting unto the brethren which are of the Gentiles in Antioch and Syria and Cilicia: (Act 15:22-23 KJV)
And as they went through the cities, they delivered them the decrees for to keep, that were ordained of the apostles and elders which were at Jerusalem. (Act 16:4 KJV)
17 And from Miletus he sent to Ephesus, and called the elders of the church.
18 And when they were come to him, he said unto them, Ye know, from the first day that I came into Asia, after what manner I have been with you at all seasons,
19 Serving the Lord with all humility of mind, and with many tears, and temptations, which befell me by the lying in wait of the Jews:
20 And how I kept back nothing that was profitable unto you, but have shewed you, and have taught you publickly, and from house to house,
21 Testifying both to the Jews, and also to the Greeks, repentance toward God, and faith toward our Lord Jesus Christ.
22 And now, behold, I go bound in the spirit unto Jerusalem, not knowing the things that shall befall me there:
23 Save that the Holy Ghost witnesseth in every city, saying that bonds and afflictions abide me.
24 But none of these things move me, neither count I my life dear unto myself, so that I might finish my course with joy, and the ministry, which I have received of the Lord Jesus, to testify the gospel of the grace of God.
25 And now, behold, I know that ye all, among whom I have gone preaching the kingdom of God, shall see my face no more.
26 Wherefore I take you to record this day, that I am pure from the blood of all men.
27 For I have not shunned to declare unto you all the counsel of God.
28 Take heed therefore unto yourselves, and to all the flock, over the which the Holy Ghost hath made you overseers, to feed the church of God, which he hath purchased with his own blood.
29 For I know this, that after my departing shall grievous wolves enter in among you, not sparing the flock.
30 Also of your own selves shall men arise, speaking perverse things, to draw away disciples after them.
31 Therefore watch, and remember, that by the space of three years I ceased not to warn every one night and day with tears.
32 And now, brethren, I commend you to God, and to the word of his grace, which is able to build you up, and to give you an inheritance among all them which are sanctified.
33 I have coveted no man’s silver, or gold, or apparel.
34 Yea, ye yourselves know, that these hands have ministered unto my necessities, and to them that were with me.
35 I have shewed you all things, how that so labouring ye ought to support the weak, and to remember the words of the Lord Jesus, how he said, It is more blessed to give than to receive.
36 And when he had thus spoken, he kneeled down, and prayed with them all.
37 And they all wept sore, and fell on Paul’s neck, and kissed him,
38 Sorrowing most of all for the words which he spake, that they should see his face no more. And they accompanied him unto the ship.
(Act 20:17-38 KJV)
Or he that exhorteth, on exhortation: he that giveth, let him do it with simplicity; he that ruleth, with diligence; he that sheweth mercy, with cheerfulness. (Rom 12:8 KJV)
11 And he gave some, apostles; and some, prophets; and some, evangelists; and some, pastors and teachers;
12 For the perfecting of the saints, for the work of the ministry, for the edifying of the body of Christ: (Eph 4:11-12 KJV)
Paul and Timotheus, the servants of Jesus Christ, to all the saints in Christ Jesus which are at Philippi, with the bishops and deacons: (Phi 1:1 KJV)
This is a true saying, If a man desire the office of a bishop, he desireth a good work.
2 A bishop then must be blameless, the husband of one wife, vigilant, sober, of good behaviour, given to hospitality, apt to teach;
3 Not given to wine, no striker, not greedy of filthy lucre; but patient, not a brawler, not covetous;
4 One that ruleth well his own house, having his children in subjection with all gravity;
5 (For if a man know not how to rule his own house, how shall he take care of the church of God?)
6 Not a novice, lest being lifted up with pride he fall into the condemnation of the devil.
7 Moreover he must have a good report of them which are without; lest he fall into reproach and the snare of the devil. (1Ti 3:1-7 KJV)
17 Let the elders that rule well be counted worthy of double honour, especially they who labour in the word and doctrine.
18 For the scripture saith, Thou shalt not muzzle the ox that treadeth out the corn. And, The labourer is worthy of his reward.
19 Against an elder receive not an accusation, but before two or three witnesses.
20 Them that sin rebuke before all, that others also may fear. (1Ti 5:17-20 KJV)
5 For this cause left I thee in Crete, that thou shouldest set in order the things that are wanting, and ordain elders in every city, as I had appointed thee:
6 If any be blameless, the husband of one wife, having faithful children not accused of riot or unruly.
7 For a bishop must be blameless, as the steward of God; not selfwilled, not soon angry, not given to wine, no striker, not given to filthy lucre;
8 But a lover of hospitality, a lover of good men, sober, just, holy, temperate;
9 Holding fast the faithful word as he hath been taught, that he may be able by sound doctrine both to exhort and to convince the gainsayers. (Tit 1:5-9 KJV)
Obey them that have the rule over you, and submit yourselves: for they watch for your souls, as they that must give account, that they may do it with joy, and not with grief: for that is unprofitable for you. (Heb 13:17 KJV)
The elders which are among you I exhort, who am also an elder, and a witness of the sufferings of Christ, and also a partaker of the glory that shall be revealed:
2 Feed the flock of God which is among you, taking the oversight thereof, not by constraint, but willingly; not for filthy lucre, but of a ready mind;
3 Neither as being lords over God’s heritage, but being ensamples to the flock.
4 And when the chief Shepherd shall appear, ye shall receive a crown of glory that fadeth not away.
5 Likewise, ye younger, submit yourselves unto the elder. Yea, all of you be subject one to another, and be clothed with humility: for God resisteth the proud, and giveth grace to the humble.
6 Humble yourselves therefore under the mighty hand of God, that he may exalt you in due time:
7 Casting all your care upon him; for he careth for you.
8 Be sober, be vigilant; because your adversary the devil, as a roaring lion, walketh about, seeking whom he may devour: (1Pe 5:1-8 KJV)
Specific examples
Timothy
Paul, an apostle of Jesus Christ by the commandment of God our Saviour, and Lord Jesus Christ, which is our hope;
2 Unto Timothy, my own son in the faith: Grace, mercy, and peace, from God our Father and Jesus Christ our Lord.
3 As I besought thee to abide still at Ephesus, when I went into Macedonia, that thou mightest charge some that they teach no other doctrine,
4 Neither give heed to fables and endless genealogies, which minister questions, rather than godly edifying which is in faith: so do. (1Ti 1:1-4 KJV)
12 Let no man despise thy youth; but be thou an example of the believers, in word, in conversation, in charity, in spirit, in faith, in purity.
13 Till I come, give attendance to reading, to exhortation, to doctrine.
14 Neglect not the gift that is in thee, which was given thee by prophecy, with the laying on of the hands of the presbytery.
15 Meditate upon these things; give thyself wholly to them; that thy profiting may appear to all.
16 Take heed unto thyself, and unto the doctrine; continue in them: for in doing this thou shalt both save thyself, and them that hear thee. (1Ti 4:12-16 KJV)
Paul, an apostle of Jesus Christ by the will of God, according to the promise of life which is in Christ Jesus,
2 To Timothy, my dearly beloved son: Grace, mercy, and peace, from God the Father and Christ Jesus our Lord.
3 I thank God, whom I serve from my forefathers with pure conscience, that without ceasing I have remembrance of thee in my prayers night and day;
4 Greatly desiring to see thee, being mindful of thy tears, that I may be filled with joy;
5 When I call to remembrance the unfeigned faith that is in thee, which dwelt first in thy grandmother Lois, and thy mother Eunice; and I am persuaded that in thee also.
6 Wherefore I put thee in remembrance that thou stir up the gift of God, which is in thee by the putting on of my hands. (2Ti 1:1-6 KJV)
Preach the word; be instant in season, out of season; reprove, rebuke, exhort with all longsuffering and doctrine. (2Ti 4:2 KJV)
Titus
4 To Titus, mine own son after the common faith: Grace, mercy, and peace, from God the Father and the Lord Jesus Christ our Saviour.
5 For this cause left I thee in Crete, that thou shouldest set in order the things that are wanting, and ordain elders in every city, as I had appointed thee:
6 If any be blameless, the husband of one wife, having faithful children not accused of riot or unruly.
7 For a bishop must be blameless, as the steward of God; not selfwilled, not soon angry, not given to wine, no striker, not given to filthy lucre;
8 But a lover of hospitality, a lover of good men, sober, just, holy, temperate;
9 Holding fast the faithful word as he hath been taught, that he may be able by sound doctrine both to exhort and to convince the gainsayers. (Tit 1:4-9 KJV)
Peter
The elders which are among you I exhort, who am also an elder, and a witness of the sufferings of Christ, and also a partaker of the glory that shall be revealed:
2 Feed the flock of God which is among you, taking the oversight thereof, not by constraint, but willingly; not for filthy lucre, but of a ready mind;
3 Neither as being lords over God’s heritage, but being ensamples to the flock.
4 And when the chief Shepherd shall appear, ye shall receive a crown of glory that fadeth not away. (1Pe 5:1-4 KJV)
John And Gaius
The elder unto the wellbeloved Gaius, whom I love in the truth.
2 Beloved, I wish above all things that thou mayest prosper and be in health, even as thy soul prospereth.
3 For I rejoiced greatly, when the brethren came and testified of the truth that is in thee, even as thou walkest in the truth.
4 I have no greater joy than to hear that my children walk in truth.
5 Beloved, thou doest faithfully whatsoever thou doest to the brethren, and to strangers;
6 Which have borne witness of thy charity before the church: whom if thou bring forward on their journey after a godly sort, thou shalt do well:
7 Because that for his name’s sake they went forth, taking nothing of the Gentiles. (3Jo 1:1-7 KJV)