(Acts 2:1-4)
1 Now when the Day of Pentecost had fully come, they were all with one accord in one place.
2 And suddenly there came a sound from heaven, as of a rushing mighty wind, and it filled the whole house where they were sitting.
3 Then there appeared to them divided tongues, as of fire, and one sat upon each of them.
4 And they were all filled with the Holy Spirit and began to speak with other tongues, as the Spirit gave them utterance.

(Acts 2:14-15)
14 But Peter, standing up with the eleven, raised his voice and said to them, "Men of Judea and all who dwell in Jerusalem, let this be known to you, and heed my words.
15 For these are not drunk, as you suppose, since it is only the third hour of the day. But this is what was spoken by the prophet Joel:

(Joel 2:28-29)
28 "And it shall come to pass afterward that I will pour out My Spirit on all flesh; your sons and your daughters shall prophesy, your old men shall dream dreams, your young men shall see visions.
29 And also on My menservants and on My maidservants I will pour out My Spirit in those days

(Acts 2:36-39)
36 "Therefore let all the house of Israel know assuredly that God has made this Jesus, whom you crucified, both Lord and Christ."
37 Now when they heard this, they were cut to the heart, and said to Peter and the rest of the apostles, "Men and brethren, what shall we do?"
38 Then Peter said to them, "Repent, and let every one of you be baptized in the name of Jesus Christ for the remission of sins; and you shall receive the gift of the Holy Spirit.
39 "For the promise is to you and to your children, and to all who are afar off, as many as the Lord our God will call."

(NKJV)