Leviticus 23:16-21 The Feast of Pentecost (Leviticus 23:16-21) Fourth, the Feast of Pentecost (Leviticus 23:16-21), which was observed fifty days after the Feast of the Firstfruits. This was another first day of the week (cf. Leviticus 23:15), the eighth day, the morrow after the Sabbath. The offering of the two loaves in which leaven was allowed is emphatic here because it represents, not Christ, nor the Holy Spirit, but the Church. Pentecost was the birthday of the Church.