And when the day of Pentecost was fully come, they were all with one accord in one place. (2:1)

For Paul had determined to sail by Ephesus, because he would not spend the time in Asia: for he hasted, if it were possible for him, to be at Jerusalem the day of Pentecost. (20:16)

--1 Corinthians--

But I will tarry at Ephesus until Pentecost. (16:8)