Peter said that the prophet Joel foretold what the Holy Spirit would do.

Acts 2:14-21

14 So Peter stood up with the other eleven apostles and spoke loudly to the crowd of people, saying, “My fellow Jews and you others who are staying in Jerusalem, listen to me, all of you, and I will explain to you what is happening! 15 Some of you think that we(exc) are drunk, but we are not drunk. It is only nine o’clock in the morning, and people here never get drunk this early in the day! 16 Instead, what has happened to us is the miraculous thing that the prophet Joel wrote about long ago. Joel wrote:

God says, 17 ‘During the last/final days before I judge all people, I will give my Spirit abundantly/generously to people [SYN] everywhere. As a result, your sons and daughters will tell people messages from me, the young men among you will see visions from me, and the old men among you will have dreams that I will give them. 18 During those days I will abundantly/generously give my Spirit even to men and women believers who are my slaves/servants, so they can tell people messages from me. 19 I will cause amazing things to happen in the sky, and I will do miracles on the earth that will show that I am powerful. Here on the earth [CHI] I will cause wars with blood, fire and thick/dark smoke everywhere. 20 In the sky the sun will appear dark to people and the moon will appear red to them. Those things will happen before the important and splendid/amazing day [MTY] when I, the Lord God, will come to judge everyone. 21 Before that time, all those who ask me [MTY] to save them from the guilt of their sins will be saved {I, the Lord, will save all those who ask me [MTY] to save them from the guilt of their sins.}’”