Thanksgiving is often mislabeled as the most American of holidays, but it is simply an American adaptation of harvest festivals celebrated in virtually every nation from time immemorial. This adaptation is not wrong in principle, as we should give thanks to the great God who causes all things that He created to grow and produce abundantly, allowing us to enjoy His beneficence. Both Pentecost and Tabernacles are set in harvest associations, establishing a true pattern for such celebrations. The settlers at Plymouth Rock called themselves pilgrims, believing they were on a journey to a Promised Land of religious liberty where they could worship God according to their understanding, and they dedicated that first Thanksgiving in America to give thanks to God for His provision. God's festivals, especially the Feast of Tabernacles, emphasize family-type activities without forgetting the God who makes all these blessings possible, as the root of a Hebrew word translated as feast suggests dancing and turning in a circle.

God's annual holy days and feasts are of vital importance, revealing a broad spectrum of understanding of His truth. These feasts, detailed in Exodus 12 and Leviticus 23, include the Passover, the Days of Unleavened Bread, Pentecost, the Feast of Trumpets, the Day of Atonement, the Feast of Tabernacles, and the Last Great Day. They were observed by the congregation of Israel, known as the church in the wilderness, long before the law of Moses was given, and are not merely Jewish observances but belong to God, rooted in both the Old and New Testaments. Jesus Christ faithfully observed these holy feasts, including the Passover and the Feast of Tabernacles, as recorded in the Gospels. He kept the Passover on the 14th of Nisan, instituting new symbols of bread and wine as a memorial of His death, and taught that it would be observed in the Kingdom of God. During the Feast of Tabernacles, He attended in secret due to threats from His enemies, yet preached powerfully, demonstrating the importance of these convocations for God's people. The early church, as documented in the book of Acts and the epistles, continued to observe these festivals. Paul, the apostle to the Gentiles, kept the holy days and referenced them in his teachings to Gentile converts, such as in Corinth, where he urged them to keep the feast of Unleavened Bread, symbolizing the purging of spiritual sin. The book of Acts records the church being filled with the Holy Spirit on Pentecost and Paul observing the Days of Unleavened Bread and the Day of Atonement. Despite historical attacks on these holy days, often fueled by anti-Jewish sentiment and false teachers, the true church of God has been commanded to keep them. These feasts were not restricted to Jerusalem under the spiritual Melchizedek priesthood of Jesus Christ, allowing God's church to observe them in any location in spirit and truth. They carry profound symbolism, portraying different periods in God's plan of spiritual creation and redemption, and are essential for maintaining the true memory and worship of God. God's seven annual holy days are in force for the church, as taught by Jesus Christ and the apostles, including Paul, Peter, and John, who followed in His footsteps. Failing to observe these Sabbaths risks losing contact with the true God, as seen in ancient Israel's history of idolatry when they profaned His days. These feasts are a commanded joy and hope, purposed by God to impress the truths of His plan of salvation on His children through all time.

Obedience to the festival commands is a vital part of the Fourth Commandment, and failing to keep them falls under the general category of idolatry, thus breaking the first of the two great commandments to love the Lord our God with all our heart, soul, and mind. All activities of life must show love toward God, and this includes the keeping of the Holy Days, specifically the Days of Unleavened Bread. The instruction regarding the Days of Unleavened Bread, along with Pentecost and Tabernacles, is placed within the terms of the Old Covenant, attaching them as part of the national character and responsibility of the Israelitish people. However, the keeping of these festivals is not limited to Israelites, as anyone who desired to observe them was free to do so, with one law applying to both home-born Israelites and strangers, encompassing Passover, Days of Unleavened Bread, and Pentecost. Even as the weekly Sabbath was made for man, so are the annual Sabbaths, all being part of the Fourth Commandment. Clear examples of Jesus and Paul observing these days demonstrate their importance, showing that they were not considered done away with. The failure of mankind to keep God's Sabbath and Holy Days is a clear example of human nature's resistance to following the examples of Jesus Christ, despite those examples being plainly shown. The Apostle Paul observed the Days of Unleavened Bread with the church at Philippi and remained at Ephesus to observe Pentecost with Gentile Christians, indicating the significance of these festivals in his planning and ministry. Paul also made it to Jerusalem in time for the feast of Pentecost, further emphasizing the importance of these days to him and the early church. The festivals of Leviticus 23 were evidently central to the way of life practiced by Paul and the congregations he served.

All holy days—along with the weekly Sabbath—are commanded to include holy convocations, as stated in Leviticus 23:2-4. However, a rare and often overlooked distinction exists within these instructions: a couple of these observances are additionally designated as sacred assemblies, or solemn assemblies. Although the terms holy convocation and sacred assembly have commonly been treated as interchangeable, they are, in fact, not synonymous. The Hebrew word rendered as sacred assembly is atzeret (Strong's 6116). Every atzeret is a holy convocation, but it carries a special, additional purpose beyond that of a standard holy convocation. The law specifically identifies only two sacred assemblies—two atzerote, the plural form of atzeret—and both occur at the conclusion of week-long festivals. In one instance, the Last Day of Unleavened Bread is commanded to have a sacred assembly, according to Deuteronomy 16:8. Yet it is the Eighth Day, which immediately follows the Feast of Tabernacles, that is most frequently associated with the term sacred assembly, as detailed in Leviticus 23:33-36. The Eighth Day holds particular significance because it stands as the last annual holy day observed before the calendar cycles back to springtime, when the sacred year begins anew. This placement is notable given the natural human tendency to forget events from the recent past, let alone recall what occurred earlier in the year. The positioning of the Eighth Day at the very end of the annual cycle, along with the themes embedded in the root meaning of atzeret, suggests that the entire progression of holy day observances is meant to be brought to a close and retained firmly in the mind. The sacred assembly, therefore, functions as a marker of completion, prompting reflection on all that the preceding festivals have taught. This idea of closure is further enriched by the symbolic meaning of the number eight in Scripture, which consistently points to new beginnings. The convergence of these two themes—the closing and retaining of the past year's instruction, paired with the symbolism of a new beginning—suggests a deliberate purpose behind the Eighth Day's placement. It implies that what was produced through a year's worship and observance of God's holy days should not simply be set aside or forgotten, but should instead be actively used as the foundation for beginning again. The sacred assembly thus serves as a hinge point between reflection on the past and preparation for renewal, ensuring that the lessons of the entire festival cycle are carried forward rather than lost to the passage of time.