But Peter, standing up with the eleven, {h} lifted up his voice, and said unto them, Ye men of Judaea, and all ye that dwell at Jerusalem, be this known unto you, and hearken to my words:

(h) The holiness of Peter is to be marked, in which the grace of the Holy Spirit is to be seen, even from the very beginning.

People's New Testament

2:14 Peter, standing up. In the name of all the apostles. Jesus had said that Peter should receive the keys of the kingdom (Mt 16:19), and they are now to be used to open its doors.

With the eleven. Eleven other apostles besides himself. He now begins the first gospel sermon. He and the apostles now begin their witness to Christ.

Wesley's Notes

2:14 Then Peter standing up - All the gestures, all the words of Peter, show the utmost sobriety; lifted up his voice - With cheerfulness and boldness; and said to them - This discourse has three parts; each of which, Ac 2:14,22,29, begins with the same appellation, men: only to the last part he prefixes with more familiarity the additional word brethren. Men of Judea - That is, ye that are born in Judea. St. Peter spoke in Hebrew, which they all understood.

Scofield Reference Notes

[1] said unto them

The theme of Peter's sermon at Pentecost is stated in Acts 2:36. It is, that Jesus is the Messiah. No message could have been more unwelcome to the Jews who had rejected His Messianic claims, and crucified Him. Peter, therefore, does not announce his theme until he has covered every possible Jewish objection. The point of difficulty with the Jews was the apparent failure of the clear and repeated prophetic promise of a regathered Israel established in their own land under their covenanted King (e.g). Isa 11:10-12 Jer 23:5-8 Ezek 37:21-18. Instead of explaining, as Rome first taught, followed by some Protestant commentators, that the covenant and promises were to be fulfilled in the church in a so-called "spiritual" sense, Peter shows Acts 2:25-32 from Ps 16. that David himself understood that the dead and risen Christ would fulfil the covenant and sit on his throne Lk 1:32,33. In precisely the same way James Acts 15:14-17 met the same difficulty. See "Kingdom (O.T.)," Zech 12:8 (N.T.), Lk 1:33 1Cor 15:24.

Jamieson-Fausset-Brown Bible Commentary

Ac 2:14-36. Peter for the First Time, Publicly Preaches Christ.

14-21. Peter, standing up with the eleven-in advance, perhaps, of the rest.

Matthew Henry's Concise Commentary

2:14-21 Peter's sermon shows that he was thoroughly recovered from his fall, and thoroughly restored to the Divine favour; for he who had denied Christ, now boldly confessed him. His account of the miraculous pouring forth of the Spirit, was designed to awaken the hearers to embrace the faith of Christ, and to join themselves to his church. It was the fulfilling the Scripture, and the fruit of Christ's resurrection and ascension, and proof of both. Though Peter was filled with the Holy Ghost, and spake with tongues as the Spirit gave him utterance, yet he did not think to set aside the Scriptures. Christ's scholars never learn above their Bible; and the Spirit is given, not to do away the Scriptures, but to enable us to understand, approve, and obey them. Assuredly none will escape the condemnation of the great day, except those who call upon the name of the Lord, in and through his Son Jesus Christ, as the Saviour of sinners, and the Judge of all mankind.