Greek Key Terms:
Context: Revelation 21-22 describes the New Jerusalem, the consummation of redemptive history. The city descends from heaven, prepared as a bride adorned for her husband (21:2). God dwells with His people (21:3). There is no temple, for God and the Lamb are its temple (21:22). Verse 27 specifies who enters the city and who is excluded.
Connections:
Christological Connection: The complete trajectory of the Feast of Unleavened Bread culminates here. Exodus 12: Purge leaven from homes for seven days; violators cut off. 1 Corinthians 5:7-8: "Christ, our Passover lamb, has been sacrificed. Let us therefore celebrate the festival...with the unleavened bread of sincerity and truth" (present tense—continuous purity). Revelation 21:27: Eternal city with no leaven (sin) forever. The escalation: Israel purged leaven one week annually. The church lives in perpetual purity now. The glorified church dwells in perfect purity eternally. What the feast foreshadowed in ritual (temporary removal of leaven), the New Jerusalem fulfills in reality (permanent exclusion of all corruption). The church lives between the ages: already purged positionally (1 Corinthians 5:7: "as you really are unleavened"), being purified progressively (sanctification), will be presented perfectly (glorification, Ephesians 5:27: "without spot or wrinkle").
Application: Are you prepared to enter the city? Revelation 21:27 is both warning and promise. Warning: "Nothing unclean will ever enter." If you cling to sin, you will not enter. If you love falsehood, you are excluded. If you practice abomination, the gates are shut. This is not harsh; it's reality. God is holy, and holiness cannot coexist with sin. Promise: "Those written in the Lamb's book of life" will enter. Salvation is by grace, through faith, recorded in God's book. Have you trusted Christ? Then your name is written. Are you being sanctified? Then you are being prepared for the city. The feast taught that redemption requires sanctification—the Passover lamb's blood saved, but unleavened living followed. Christ's blood saves you; His Spirit sanctifies you. Pursue holiness, for "without it no one will see the Lord" (Hebrews 12:14). One day, the feast's ultimate meaning will be realized: you will enter the city where no leaven (sin) exists, and you will dwell with God forever in perfect purity.
Connection Method(s): Typology (Direct, Forward-Looking), Redemptive-Historical Progression — The New Jerusalem's permanent exclusion of all corruption consummates the Unleavened Bread trajectory: from annual purge (Israel) to perpetual purity (church) to eternal sinlessness (new creation).
Trajectory Table: 165 - Unleavened Bread (Purity and Sincerity)