The Feast of Weeks, also known as the Feast of Harvest, is a time set apart by God for His people to remember Him. It is a culmination of a perfect span of time, specifically seven weeks, which is referred to as seven sevens or perfect perfection. This feast cannot take place until the designated number of weeks has been fulfilled, emphasizing its connection to time and divine appointment. The Feast of Weeks is kept to the LORD, and it serves as a reminder of God's deliverance from slavery, a theme common to all three festival seasons. The feast also has an agricultural focus, pointing to God's providence and natural law, and the dependence of His people on Him. During the seven weeks leading up to the Feast of Weeks, the focus is on what is being sown and cultivated, as these labors will be evaluated and brought before God. The feast is a time when the firstfruits of labors are presented to God, symbolizing a harvest of efforts that are held up for His examination and acceptance. The two wave loaves offered during the Feast of Weeks are a grain offering, representing the fruit of one's labors from God's bounty. These loaves, baked with leaven, signify that our works are imperfect but can still be graciously used by God due to Christ's perfect work. The Feast of Weeks pulls our thoughts away from ourselves and back to God, reminding us that the purpose of our labors is to glorify Him with the spiritual fruit produced through what He has given.

Today is the Feast of Pentecost, a commanded holy day on God's sacred calendar, one among seven throughout the year. It is also known as the Feast of Weeks, a name found in several biblical passages, including Exodus 34:22, Numbers 28:26, Deuteronomy 16:10 and 16, and II Chronicles 8:13. Additionally, it is called the Feast of Harvest in Exodus 23:16, and in the New Testament context, it is commonly referred to as Pentecost, a Greek term meaning "count fifty." In the Old Testament, the Feast of Weeks is detailed in Leviticus 23:15-21, where significant offerings and symbolic information are presented. This feast, along with the wave sheaf day, portrays a period initiated by the offering of a wave sheaf and concluded with the offering of two wave loaves, both identified as firstfruits. The wave sheaf represents the firstfruits of the barley harvest, while the two wave loaves, made with fine wheat flour, are also firstfruits to the Lord. The link between wave sheaf day and the Feast of Weeks is twofold: wave sheaf day begins the harvest and the seven-week count to Pentecost, while Pentecost ends both the count and the harvest; additionally, both feasts center on the concept of firstfruits. The Feast of Weeks emphasizes Jesus Christ as the central figure, the preeminent Firstfruit. On wave sheaf day, He is the firstfruit chronologically, the beginning of God's spiritual harvest, the firstborn from the dead, and the first to be given glory. On the day of Pentecost, He is the model Firstfruit, the One par excellence, the standard that the elect must emulate. As the initiator of the harvest of firstfruits, His role underscores the spiritual significance of this holy day, pointing to His work and character as Redeemer, High Priest, and King.

The Feast of Weeks, also known as Pentecost, is determined by counting fifty days from the Wavesheaf offering. There is wide agreement among various groups, both ancient Jewish sects and modern Christian communities, on using the Hebrew inclusive counting method, which begins with the day assigned for waving the sheaf. The count to the Feast of Weeks should always start on the day following the weekly Sabbath that falls within the two annual high holy day Sabbaths marking the beginning and end of the Feast of Unleavened Bread, ensuring the first day of the count is a Sunday and the fiftieth day, the Feast of Weeks, also falls on a Sunday. In years when Passover falls on a weekly Sabbath, causing the first day of Unleavened Bread to be on a Sunday, the count begins the next day, outside the Feast of Unleavened Bread, to maintain a consistent rule. Historically, Jewish groups like the Sadducees, Samaritans, and Karaites interpreted the start of the count as the first Sunday after the first day of Passover, aligning with the practice of beginning the count after the weekly Sabbath within the Feast of Unleavened Bread, ensuring the Feast of Weeks always falls on a Sunday. This consistent approach avoids confusion and exceptions that arise from alternative counting methods.

The Feast of Weeks, also known as Pentecost, is a holy day that concludes a period of harvest focused on the firstfruits of the Kingdom. This period begins with the wavesheaf offering, representing Jesus Christ as the first of the firstfruits, and ends with the waving of two leavened loaves, symbolizing God's acceptance of His people into His Kingdom. Throughout the fifty days from the wavesheaf to Pentecost, the emphasis is on the harvest of the firstfruits and God's role in it. The Feast of Weeks highlights the work of God's people, both externally in their fields and internally in their dwellings, as they labor to produce godly character and growth. This period pictures intense labor of sowing and reaping, with God working alongside His people, blessing their efforts. The new grain offered at Pentecost comes from the joint efforts of God and His people.

There has been a subtle doctrinal shift in how the Church of God counts to Pentecost, like the cultural rebranding which switched the political colors of the two major political parties during the 2000 U.S. election. Leviticus 23 commands God's people to count to Pentecost "from the morrow after the Sabbath" culminating on the day after the after the seventh Sabbath. Historically, God's Church followed the Sadducean practice anchoring the count to the weekly Sabbath during Unleavened Bread, with the Days of Unleavened Bread, even if the offering occurred on a holy day or a high Sabbath. In 1974, the church surreptitiously aligned itself with the Karaite practice of always putting Wavesheaf day within Unleavened Bread. Proponents tried to link Christ's resurrection with Unleavened Bread, at the cost of overriding clear, well-established, biblical commands. Unlike the change of observing Pentecost from Monday to Sunday, this additional subtle change was never explained publicly. Herbert W. Armstrong never publicly spoke or wrote about this second change. God's called-out saints must return to the original method for 1.) Scriptural integrity-the Sabbath refers to a weekly Sabbath rather than a high day. 2.) Historical and Theological Consistency-The Sadducees, who controlled the Temple at this time, used this method. 3.) Practical Faithfulness-the Wave Sheaf signals a task reserved for a workday rather than a Holy Sabbath. 4.) Guarding against doctrinal drift—just as slight changes in tradition can obscure core truths, such as Sunday worship replacing God's Sabbath, and adding requirements not found in Scripture, risks the danger of making the commands of Almighty God "of no effect." The count to Pentecost in 2025 and every year thereafter, must begin on the Sunday after the weekly Sabbath during Unleavened Bread.