There were 12 original Apostles that Jesus commissioned to establish the Church and spread the gospel.
General References of the 12 Apostles.
33 And with great power gave the apostles witness of the resurrection of the Lord Jesus: and great grace was upon them all.
34 Neither was there any among them that lacked: for as many as were possessors of lands or houses sold them, and brought the prices of the things that were sold,
35 And laid them down at the apostles’ feet: and distribution was made unto every man according as he had need.
36 And Joses, who by the apostles was surnamed Barnabas, (which is, being interpreted, The son of consolation,) a Levite, and of the country of Cyprus,
37 Having land, sold it, and brought the money, and laid it at the apostles’ feet. (Act 4:33-37 KJV)
12 And by the hands of the apostles were many signs and wonders wrought among the people; (and they were all with one accord in Solomon’s porch. (Act 5:12 KJV)
18 And laid their hands on the apostles, and put them in the common prison.
19 But the angel of the Lord by night opened the prison doors, and brought them forth, and said,
20 Go, stand and speak in the temple to the people all the words of this life.
21 And when they heard that, they entered into the temple early in the morning, and taught. But the high priest came, and they that were with him, and called the council together, and all the senate of the children of Israel, and sent to the prison to have them brought.
22 But when the officers came, and found them not in the prison, they returned, and told,
23 Saying, The prison truly found we shut with all safety, and the keepers standing without before the doors: but when we had opened, we found no man within.
24 Now when the high priest and the captain of the temple and the chief priests heard these things, they doubted of them whereunto this would grow.
25 Then came one and told them, saying, Behold, the men whom ye put in prison are standing in the temple, and teaching the people.
26 Then went the captain with the officers, and brought them without violence: for they feared the people, lest they should have been stoned.
27 And when they had brought them, they set them before the council: and the high priest asked them,
28 Saying, Did not we straitly command you that ye should not teach in this name? and, behold, ye have filled Jerusalem with your doctrine, and intend to bring this man’s blood upon us.
29 Then Peter and the other apostles answered and said, We ought to obey God rather than men.
30 The God of our fathers raised up Jesus, whom ye slew and hanged on a tree.
31 Him hath God exalted with his right hand to be a Prince and a Saviour, for to give repentance to Israel, and forgiveness of sins.
32 And we are his witnesses of these things; and so is also the Holy Ghost, whom God hath given to them that obey him.
33 When they heard that, they were cut to the heart, and took counsel to slay them.
34 Then stood there up one in the council, a Pharisee, named Gamaliel, a doctor of the law, had in reputation among all the people, and commanded to put the apostles forth a little space;
35 And said unto them, Ye men of Israel, take heed to yourselves what ye intend to do as touching these men.
36 For before these days rose up Theudas, boasting himself to be somebody; to whom a number of men, about four hundred, joined themselves: who was slain; and all, as many as obeyed him, were scattered, and brought to nought.
37 After this man rose up Judas of Galilee in the days of the taxing, and drew away much people after him: he also perished; and all, even as many as obeyed him, were dispersed.
38 And now I say unto you, Refrain from these men, and let them alone: for if this counsel or this work be of men, it will come to nought:
39 But if it be of God, ye cannot overthrow it; lest haply ye be found even to fight against God.
40 And to him they agreed: and when they had called the apostles, and beaten them, they commanded that they should not speak in the name of Jesus, and let them go.
41 And they departed from the presence of the council, rejoicing that they were counted worthy to suffer shame for his name.
42 And daily in the temple, and in every house, they ceased not to teach and preach Jesus Christ.
(Act 5:18-42 KJV)
6 Whom they set before the apostles: and when they had prayed, they laid their hands on them. (Act 6:6 KJV)
14 Now when the apostles which were at Jerusalem heard that Samaria had received the word of God, they sent unto them Peter and John: (Act 8:14 KJV)
18 And when Simon saw that through laying on of the apostles’ hands the Holy Ghost was given, he offered them money, (Act 8:18 KJV)
27 But Barnabas took him, and brought him to the apostles, and declared unto them how he had seen the Lord in the way, and that he had spoken to him, and how he had preached boldly at Damascus in the name of Jesus. (Act 9:27 KJV)
And the apostles and brethren that were in Judaea heard that the Gentiles had also received the word of God. (Act 11:1 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)
4 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)
5 Have we not power to lead about a sister, a wife, as well as other apostles, and as the brethren of the Lord, and Cephas? (1Co 9:5 KJV)
28 And God hath set some in the church, first apostles, secondarily prophets, thirdly teachers, after that miracles, then gifts of healings, helps, governments, diversities of tongues.
29 Are all apostles? are all prophets? are all teachers? are all workers of miracles? (1Co 12:28-29 KJV)
17 Neither went I up to Jerusalem to them which were apostles before me; but I went into Arabia, and returned again unto Damascus. (Gal 1:17 KJV)
20 And are built upon the foundation of the apostles and prophets, Jesus Christ himself being the chief corner stone; (Eph 2:20 KJV)
11 And he gave some, apostles; and some, prophets; and some, evangelists; and some, pastors and teachers; (Eph 4:11 KJV)
17 But, beloved, remember ye the words which were spoken before of the apostles of our Lord Jesus Christ; (Jud 1:17 KJV)
Specific Examples:
The 12 Apostles
2 Now the names of the twelve apostles are these; The first, Simon, who is called Peter, and Andrew his brother; James the son of Zebedee, and John his brother; (Mat 10:2 KJV)
14 And he ordained twelve, that they should be with him, and that he might send them forth to preach, (Mar 3:14 KJV)
13 And when it was day, he called unto him his disciples: and of them he chose twelve, whom also he named apostles; (Luk 6:13 KJV)
15 And in those days Peter stood up in the midst of the disciples, and said, (the number of names together were about an hundred and twenty,)
16 Men and brethren, this scripture must needs have been fulfilled, which the Holy Ghost by the mouth of David spake before concerning Judas, which was guide to them that took Jesus.
17 For he was numbered with us, and had obtained part of this ministry.
18 Now this man purchased a field with the reward of iniquity; and falling headlong, he burst asunder in the midst, and all his bowels gushed out.
19 And it was known unto all the dwellers at Jerusalem; insomuch as that field is called in their proper tongue, Aceldama, that is to say, The field of blood.
20 For it is written in the book of Psalms, Let his habitation be desolate, and let no man dwell therein: and his bishoprick let another take.
21 Wherefore of these men which have companied with us all the time that the Lord Jesus went in and out among us,
22 Beginning from the baptism of John, unto that same day that he was taken up from us, must one be ordained to be a witness with us of his resurrection.
23 And they appointed two, Joseph called Barsabas, who was surnamed Justus, and Matthias.
24 And they prayed, and said, Thou, Lord, which knowest the hearts of all men, shew whether of these two thou hast chosen,
25 That he may take part of this ministry and apostleship, from which Judas by transgression fell, that he might go to his own place.
26 And they gave forth their lots; and the lot fell upon Matthias; and he was numbered with the eleven apostles. (Act 1:15-1 KJV)
14 And the wall of the city had twelve foundations, and in them the names of the twelve apostles of the Lamb. (Rev 21:14 KJV)
Paul
Paul, a servant of Jesus Christ, called to be an apostle, separated unto the gospel of God, (Rom 1:1 KJV)
13 For I speak to you Gentiles, inasmuch as I am the apostle of the Gentiles, I magnify mine office: (Rom 11:13 KJV)
Paul, called to be an apostle of Jesus Christ through the will of God, and Sosthenes our brother, (1Co 1:1 KJV)
Paul, an apostle, (not of men, neither by man, but by Jesus Christ, and God the Father, who raised him from the dead;) (Gal 1:1 KJV)
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 verity. (1Ti 2:7 KJV)
Peter
Peter, an apostle of Jesus Christ, to the strangers scattered throughout Pontus, Galatia, Cappadocia, Asia, and Bithynia, (1Pe 1:1 KJV)
Simon Peter, a servant and an apostle of Jesus Christ, to them that have obtained like precious faith with us through the righteousness of God and our Saviour Jesus Christ: (2Pe 1:1 KJV)