The book of Revelation closes with an invitation for all to come to Christ and be blessed. "And the Spirit and the bride say, Come" (Rev. 22:17). The Holy Spirit uses the Holy Scripture to invite all to come to Christ. The bride of Christ is the church. So, Christ commissioned the church to preach the gospel to all people in all nations. Come to Christ and be blessed.
The book of Revelation declares seven blessings upon the people of God in Christ. These are described as the seven beatitudes in Revelation (Rev. 1:3; 14:13; 16:15; 19:9; 20:6; 22:7; 22:14). Those blessings are in this life and the life to come. All the blessings of God are in Christ. "Blessed be the God and Father of our Lord Jesus Christ, who has blessed us with every spiritual spiritual blessing in the heavenly places in Christ" (Ephesians 1:3).
We are blessed of God to enter a new world. "And there shall be no more curse, but the throne of God and of the Lamb shall be in it, and His servants shall serve Him" (Rev. 22:3). Everyone is either blessed or cursed. The blessed of God are redeemed by the blood of the Lamb, at the cross of Jesus. He is the Lamb of God who takes away the sin of the world (John 1:29).
We are blessed of God to "have the right to the tree of life" (Rev. 22:14). We drink from the water of life freely. Both the tree of life and the water of life are symbols of eternal life through Jesus Christ our Lord (Romans 6:23). Eternal life is the gift of God received by all who believe on the Lord Jesus Christ. The gift of God is the grace of God in Christ. "The grace of our Lord Jesus Christ be with you all" (Rev. 22:21).