The Paraclete appeared on the Pentecost

[tonychanyt]

The first Christian Pentecost was a special event.

John prophesied in Matthew 3:

11 I baptize you with water for repentance, but after me will come One more powerful than I, whose sandals I am not worthy to carry. He will baptize you with the Holy Spirit and with fire.

Before Jesus died, he promised his disciples in John 16:

7 But very truly I tell you, it is for your good that I am going away. Unless I go away, the Advocate [Paraclete] will not come to you; but if I go, I will send him to you.

When?

The 50th day (the seventh Sunday) from resurrection Sunday. God sent the Paraclete on the Pentecost.

After the resurrection, Acts 1:

4 while staying with them he [Jesus] ordered them not to depart from Jerusalem, but to wait for the promise of the Father,

i.e., the Paraclete

which, he said, “you heard from me; 5for John baptized with water, but you will be baptized with the Holy Spirit not many days from now.”

Jesus confirmed John's prophecy.

Acts 2:

1 When the day of Pentecost arrived, they were all together in one place. 2 And suddenly there came from heaven a sound like a mighty rushing wind, and it filled the entire house where they were sitting. 3 And divided tongues as of fire appeared to them and rested on each one of them. 4 And they were all filled with the Holy Spirit

I interpret that as dwelled

and began to speak in other tongues as the Spirit gave them utterance.

The Holy Spirit branches out tongues of fire to dwell in us. The 1st Pentecost marked the public introduction of the Paraclete. It officially inaugurated the Christian church. It was a unique day in the history of days.

See also Initial parties to receive the Paraclete/Spirit