the prophecy of joel

Peter quoted from Joel 2:28-32 on the Day of Pentecost.  There was tongues speech in the background and 2 different responses from the observers that had come from around the world.  One was dismissive. "These men are drunk".  The other was inquisitive. "What does this mean".  Luke tells us that when Peter stood up he was full of the Holy Spirit! Joel lived hundreds of years before this event.  On this day, He prophecy began to be fulfilled.

Joel 2:28        After this
    I will pour out my Spirit on all humanity;
    then your sons and your daughters will prophesy,
    your old men will have dreams,
    and your young men will see visions.
29     I will even pour out my Spirit
    on the male and female slaves in those days.
30     I will display wonders
    in the heavens and on the earth:
    blood, fire, and columns of smoke.
31     The sun will be turned to darkness
    and the moon to blood
    before the great and terrible day of the LORD comes.
32     Then everyone who calls
    on the name of the LORD will be saved,
    for there will be an escape
    for those on Mount Zion and in Jerusalem,
    as the LORD promised,
    among the survivors the LORD calls.
The fulfillment of this, meant the Spirit was now available to everyone!  Praise God!