The Holy Pentecost

We have received this Feast from the Hebrew Bible; for, just as the Hebrews celebrate their own Pentecost, honoring the number seven, and because they received the Law fifty days after the Passover, so also do we, celebrating fifty days after Pascha, receive, instead of the Law, the All-Holy Spirit, Who gives us laws, guides us into all truth, and decrees what is pleasing to God.