St. Luke now relates the birthday of the Church. This took place when the day of Pentecost had fully come—that is, when the fifty days after Passover had been fulfilled. (The word Pentecost comes from the Greek word for “fifty.”) In the Jewish calendar, it originally marked the firstfruits of the wheat harvest (Ex. 34:22). It was ten days since the Lord had ascended, and His disciples had spent this time blessing God in the Temple and worshipping privately as Christians in the upper room. It was