The day of Pentecost holds significant meaning as it marks the occasion when God sent His Holy Spirit to His church, empowering Christ's disciples with the power, love, and understanding necessary to carry out the work of the church. This event, occurring in late spring, symbolizes the first spiritual harvest and is also the anniversary of the founding of God's church, representing the beginning of the portion of God's master plan where He calls people out of this evil world to develop His holy, perfect, spiritual character within them. God commanded Israel to observe Pentecost, also known as the Feast of Weeks, by counting fifty days from the day the wavesheaf offering was presented, which explains the name Pentecost, meaning "count fifty." This counting begins after the weekly Sabbath that falls during the Feast of Unleavened Bread, ensuring that Pentecost always falls on the first day of the week, Sunday. Christ's disciples observed Pentecost, and on that day, exactly fifty days after Christ ascended to heaven to be accepted by the Father, a significant event occurred as promised by Jesus. About twenty-five years after Christ's ascension, Paul, the apostle to the Gentiles, made haste to be in Jerusalem for Pentecost, demonstrating that the early church continued to keep this day annually as a reminder of their part in God's great master plan.

In the early Christian church, the observance of Pentecost was tied to the counting method used by the Sadducees, who were associated with the priesthood and controlled Temple rituals during the time of Christ. They maintained that the count to Pentecost began on the day after the weekly Sabbath within the Feast of Unleavened Bread, even if that meant the Wavesheaf offering occurred just after Unleavened Bread ended. There is no record or hint in historical accounts of Christ, the Apostles, or the early church disagreeing with this Sadducean method of counting. The New Testament remains silent on any divergence in how Pentecost was observed by the early church compared to the surrounding religious practices, unlike the varied observances of Passover. Furthermore, all four gospel writers use the Greek phrase "mia sabbaton," indicating the first day of the weeks in the count to Pentecost, aligning with the Sadducean practice of starting the count on the day after the weekly Sabbath, thus confirming this method as the one likely followed by the early church.

The observance of Pentecost in early Christian practice was intricately tied to the counting from the wavesheaf day, identified as the Sunday following the weekly Sabbath within the Days of Unleavened Bread. A decision was made to count to Pentecost from this specific Sunday, reflecting a deliberate choice in determining the date of this significant festival. Historical correspondence from March 30, 1974, under the signature of Garner Ted Armstrong, announced a change in the date of Pentecost to May 26, indicating a shift in the established practice for that year. The wavesheaf offering, while observed in or near the Days of Unleavened Bread, holds a direct symbolic connection to Pentecost, marking the beginning of a spiritual harvest that culminates fifty days later on Pentecost. This connection emphasizes that the wavesheaf day is fundamentally a Pentecost ritual, regardless of its calendar proximity to Unleavened Bread. The determination of the correct Sabbath for beginning the count to Pentecost remains critical, with the weekly Sabbath within the Days of Unleavened Bread consistently upheld as the starting point, even in years when Passover falls on a weekly Sabbath. No scriptural basis exists to alter this rule, maintaining the integrity of the count to Pentecost as established in early Christian observance.