The Word of God and his Breath are at the origin of the being and life of every creature:(cf. Ps 33:6; Ps 104:30; Gen 1:2; Gen 2:7; Eccl 3:20-21; Ezek 37:10)
It belongs to the Holy Spirit to rule, sanctify, and animate creation, for he is God, consubstantial with the Father and the Son.... Power over life pertains to the Spirit, for being God he preserves creation in the Father through the Son.(Byzantine liturgy, Sundays of the second mode, Troparion of Morning Prayer)
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; Ezek 36:25-28; Ezek 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.