"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. 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:

 ‘And it shall come to pass in the last days, says God,
That I will pour out of My Spirit on all flesh;
Your sons and your daughters shall prophesy,
Your young men shall see visions,
Your old men shall dream dreams.
And on My menservants and on My maidservants
I will pour out My Spirit in those days;
And they shall prophesy.
I will show wonders in heaven above
And signs in the earth beneath:
Blood and fire and vapor of smoke.
The sun shall be turned into darkness,
And the moon into blood,
Before the coming of the great and awesome day of the Lord.
And it shall come to pass
That whoever calls on the name of the Lord
Shall be saved.’"  - Acts 2:14-21

"And with many other words he testified and exhorted them, saying, “Be saved from this perverse generation.” Then those who gladly received his word were baptized; and that day about three thousand souls were added to them. And they continued steadfastly in the apostles’ doctrine and fellowship, in the breaking of bread, and in prayers. Then fear came upon every soul, and many wonders and signs were done through the apostles. Now all who believed were together, and had all things in common, and sold their possessions and goods, and divided them among all, as anyone had need.

So continuing daily with one accord in the temple, and breaking bread from house to house, they ate their food with gladness and simplicity of heart, praising God and having favor with all the people. And the Lord added to the church daily those who were being saved." - Acts 2:40-47