Preface 12 - Pentecost

From the Book of Divine Worship - The Proper: First Part - The Holy Eucharist - Rite Two - Prefaces for Seasons.

It is right, and a good and joyful thing, always and everywhere to give thanks to you, Father Almighty, Creator of heaven and earth, through Jesus Christ our Lord. In fulfillment of his true promise, the Holy Spirit came down [on this day] from heaven, lighting upon the disciples, to teach them and to lead them into all truth; uniting peoples of many tongues in the confession of one faith, and giving to your Church the power to serve you as aroyal priesthood, and to preach the Gospel to all nations.

The Preface for Weekdays after Pentecost begins here.