The concept of a spiritual harvest is deeply woven into God's plan of salvation, as illustrated through the agricultural harvests of the Old Testament, which serve as types of God's gathering of people into His Kingdom. The wave sheaf offering, made from the first of the firstfruits of the barley harvest, represents an initial, small harvest and is foundational to this spiritual process. This offering, waved before God for acceptance, symbolizes a thankful acknowledgment of Him as the Giver of the harvest, sanctifying it to Him. In the New Testament, this agricultural imagery transforms into a spiritual harvest, where Jesus Christ is portrayed as the arch-typical wave sheaf, harvested from the physical world through His resurrection and lifted to God's throne for acceptance as the sacrifice for sins and as our High Priest. The 50-day period from the wave sheaf offering to Pentecost emphasizes the firstfruits of the Kingdom. It begins with the waving of the barley sheaf, representing Christ, and concludes with the waving of two leavened loaves on Pentecost, symbolizing the called-out people of God, the elect. This act pictures the Father's gracious acceptance of fallible human beings into His Kingdom. Pentecost, also known as the Feast of Weeks, marks the culmination of this early harvest period, highlighting God's work with His firstfruits, from Christ's acceptance as the perfect sacrifice to the time when all His brothers and sisters fully enter His Family. On the Day of Pentecost, as recorded in Acts 2, the Holy Spirit descended with power upon the first members of the church, marking the establishment of the church of God and the beginning of spiritual group salvation. This event empowered the people to keep God's commandments, enabled the gospel to be preached worldwide through miraculous language abilities, and signified access to God the Father through the Spirit. It also united the church in peace and order, contrasting with the confusion of Babel, and underscored the church as the first small harvest of God's calling to salvation out of the world. The spiritual harvest theme continues with the understanding that those called now are predestined as firstfruits, set apart for a unique opportunity to receive the Holy Spirit and prepare for the coming Kingdom of God. This calling, initiated by God through Christ, emphasizes the importance of remaining faithful as part of the church of the firstborn, registered in the Book of Life in heaven. The ultimate vision of this harvest is the resurrection of the firstfruits, where God will glorify His spiritually begotten children, granting them power and glory akin to that of Jesus Christ, leading to an eternal purpose within His Family.