1st Week after Easter. From "The Roman Breviary" at Matins for Tuesday. From the Acts of Apostles

Lesson i (c. 2: 1-8)
And when the days of Pentecost were accomplished, they were all together in one place. And suddenly there came a sound from heaven, as of a mighty wind coming: and it filled the whole house where they were sitting. And there appeared to them parted tongues, as it were of fire: and it sat upon every one of them. And they were all filled with the Holy Ghost: and they began to speak with divers tongues according as the Holy Ghost gave them to speak. Now there were dwelling at Jerusalem, Jews, devouted men, out of every nation under heaven. And when this was noised abroad, the multitude came together and were confounded in mind, because that every man heard them speak in his own tongue. And they were all amazed and wondered, saying: Behold, are not all these that speak Galileans? And how have we heard every man our own tongue wherein we were born?

Lesson ii
But Peter, standing up with the eleven, lifted up his voice and spoke to them: Ye men of Israel, why wonder at this? Or why look you upon us, as if by our strength or power we had made this man to walk? The God of Abraham and the God of Isaac and the God of Jacob, the God of our fathers, hath glorified his Son Jesus, whom you indeed delivered up and denied before the face of Pilate, when he judged he should be released. But you denied the Holy One and the Just: and desired a murderer to be granted unto you. But the author of life you killed, whom God hath raised from the dead: of which we are witnesses. And in the faith of his name, this man whom you have seen and known, hath his name strengthened. And the faith which is by him given this perfect soundness in the sight of you all.