Within God's instructions for His annual holy days, a significant facet emerges concerning sacred assemblies. The Hebrew word translated as sacred assembly is atzeret (Strong's 6116). An atzeret is a holy convocation with a special purpose. The law specifically designates just two sacred assemblies, known as atzerote, the plural of atzeret, and they occur at the end of week-long festivals. The Last Day of Unleavened Bread is commanded to have a sacred assembly, as noted in Deuteronomy 16:8. Additionally, the Eighth Day, which immediately follows the Feast of Tabernacles, is most often associated with a sacred assembly, as seen in Leviticus 23:33-36.

In this concluding message of the Jesus in the Feasts series, we reflect on the profound spiritual meaning in the Eighth Day, the final festival in God's annual cycle, revealing Christ as "our all in all." Drawing on the late Charles Whitaker's teaching on merism, a figure of speech in which opposites express totality, this sermon illustrates how the Eighth Day encapsulates the fullness and completeness of God's divine plan through Christ. Scripture gives few details about this day (Leviticus 23:33-36), but its Hebrew term Atzeret denotes closure, restraint, or retention, marking it as the capstone that concludes the Feast of Tabernacles and the entire festival season. Spiritually, it focuses upon Christ, who embodies and fulfills every lesson, hope, and promise depicted in the holy days-our Passover, Bread of Life, King Atonement, and Tabernacle—now summed up in Him who "fills all in all" (Ephesians 1:23). Through passages, including Ephesians 1 and Revelation 2, this message teaches that God's chosen saints as Christ's Body, share in His divine fulness. He is everything we need in every way, our power, holiness, and hope. In Revelation, Jesus declares Himself to be the Alpha and Omega, the beginning and the end, reassuring His people not to fear, but endure faithfully for He reigns and will return soon. Ultimately, the Eighth Day celebrates the completion of God's redemptive work, a vision of eternal unity with Christ, Who fills and perfects all things.