Joel 3, 1-4 I will pour out my spirit upon all mankind

(Joel 3, 1-4) I will pour out my spirit upon all mankind

[1] Then afterward I will pour out my spirit upon all mankind. Your sons and daughters shall prophesy, your old men shall dream dreams, your young men shall see visions; [2] Even upon the servants and the handmaids, in those days, I will pour out my spirit. [3] And I will work wonders in the heavens and on the earth, blood, fire, and columns of smoke; [4] The sun will be turned to darkness, and the moon to blood, At the coming of the Day of the LORD, the great and terrible day.

(CCC 1287) This fullness of the Spirit was not to remain uniquely the Messiah's, but was to be communicated to the whole messianic people (Cf. Ezek 36:25-27; Joel 3:1-2). On several occasions Christ promised this outpouring of the Spirit (Cf. Lk 12:12; Jn 3:5-8; 7:37-39; 16:7-15; Acts 1:8), a promise which he fulfilled first on Easter Sunday and then more strikingly at Pentecost (Cf. Jn 20:22; Acts 2:1-14). Filled with the Holy Spirit the apostles began to proclaim "the mighty works of God," and Peter declared this outpouring of the Spirit to be the sign of the messianic age (Acts 2:11; Cf. 2:17-18). Those who believed in the apostolic preaching and were baptized received the gift of the Holy Spirit in their turn (Cf. Acts 2:38). (CCC 715) The prophetic texts that directly concern the sending of the Holy Spirit are oracles by which God speaks to the heart of his people in the language of the promise, with the accents of "love and fidelity" (Cf. Ezek 11:19; 36:25-28; 37:1-14; Jer 31:31-34; and cf. Joel 3:1-5). St. Peter will proclaim their fulfillment on the morning of Pentecost (Cf. Acts 2:17-21). According to these promises, at the "end time" the Lord's Spirit will renew the hearts of men, engraving a new law in them. He will gather and reconcile the scattered and divided peoples; he will transform the first creation, and God will dwell there with men in peace.